{"id":8355,"date":"2026-09-18T12:01:06","date_gmt":"2026-09-18T11:01:06","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/"},"modified":"2026-09-18T12:08:37","modified_gmt":"2026-09-18T11:08:37","slug":"3-1-4-energetics","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/","title":{"rendered":"3.1.4 Energetics"},"content":{"rendered":"\n<div class=\"ols-aqa314-page\">\n\n  <aside class=\"ols-sidebar\">\n  <div class=\"ols-sidebar-header\">\n    <h3>Revision Notes<\/h3>\n    <p>A Level Chemistry<\/p>\n  <\/div>\n\n  <div class=\"ols-topic-group\">\n    <h4>3.1.4 Energetics<\/h4>\n\n    <ul class=\"ols-topic-list\">\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/\">3.1.4 Overview<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/enthalpy-changes-and-standard-conditions\/\">Enthalpy Changes and Standard Conditions<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/standard-enthalpy-changes\/\">Standard Enthalpy Changes<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/calorimetry-measuring-enthalpy-changes\/\">Calorimetry: Measuring Enthalpy Changes<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/hess-law-and-enthalpy-cycles\/\">Hess's Law and Enthalpy Cycles<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/bond-enthalpies\/\">Bond Enthalpies<\/a>\n      <\/li>\n    <\/ul>\n  <\/div>\n\n  <div class=\"ols-topic-group\">\n    <h4>Other Topics<\/h4>\n\n    <ul class=\"ols-topic-list\">\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-2-amount-of-substance\/\">3.1.2 Amount of Substance<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-3-bonding\/\">3.1.3 Bonding<\/a>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-2-1-periodicity\/\">3.2.1 Periodicity<\/a>\n      <\/li>\n    <\/ul>\n  <\/div>\n<\/aside>\n\n<script>\r\n(function() {\r\n  function normalisePath(path) {\r\n    return String(path || '')\r\n      .split('?')[0]\r\n      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href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/\">Revision Notes<\/a> \/\n          <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/\">A Level Chemistry<\/a> \/\n          <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/\">AQA<\/a> \/\n          <span>3.1.4 Energetics<\/span>\n        <\/nav>\n    <\/div>\n  <\/div>\n\n  <!-- INTRO -->\n  <section class=\"ols-aqa314-intro\">\n    <div class=\"ols-aqa314-container\">\n      <div class=\"ols-aqa314-intro-inner\">\n        <div>\n          <div class=\"ols-aqa314-eyebrow\">AQA A Level Chemistry &#8211; 3.1 Physical Chemistry<\/div>\n          <h1>3.1.4<br>Energetics<\/h1>\n          <div class=\"ols-aqa314-accent-bar\"><\/div>\n          <p class=\"ols-aqa314-intro-lead\">Section 3.1.4 covers the heat energy changes that accompany chemical reactions: exothermic and endothermic reactions, enthalpy change at constant pressure, standard conditions and the standard enthalpies of combustion and formation, calorimetry with q = mc\u0394T, Hess&#8217;s law, and mean bond enthalpies. Required practical 2 measures an enthalpy change directly.<\/p>\n        <\/div>\n        <div class=\"ols-aqa314-info-grid\">\n          <div class=\"ols-aqa314-info-card\"><div class=\"ols-aqa314-info-card-label\">Exam Paper<\/div><div class=\"ols-aqa314-info-card-value\">Paper 1 &amp; 2<\/div><div class=\"ols-aqa314-info-card-sub\">7405\/1 and 7405\/2<\/div><\/div>\n          <div class=\"ols-aqa314-info-card\"><div class=\"ols-aqa314-info-card-label\">Specification Points<\/div><div class=\"ols-aqa314-info-card-value\">3.1.4.1 &#8211; 3.1.4.4<\/div><div class=\"ols-aqa314-info-card-sub\">4 sections covered<\/div><\/div>\n          <div class=\"ols-aqa314-info-card\"><div class=\"ols-aqa314-info-card-label\">Topic Parts<\/div><div class=\"ols-aqa314-info-card-value\">5 of 5 live<\/div><div class=\"ols-aqa314-info-card-sub\">Revision notes available<\/div><\/div>\n          <div class=\"ols-aqa314-info-card\"><div class=\"ols-aqa314-info-card-label\">Exam Board<\/div><div class=\"ols-aqa314-info-card-value\">AQA<\/div><div class=\"ols-aqa314-info-card-sub\">7405 (2015 onwards)<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- TOPIC CARDS -->\n  <section class=\"ols-aqa314-topics\">\n    <div class=\"ols-aqa314-container\">\n      <div class=\"ols-aqa314-section-header\">\n        <h2 class=\"ols-aqa314-section-title\">Revision Notes<\/h2>\n        <p class=\"ols-aqa314-section-sub\">Work through 3.1.4 in a structured sequence.<\/p>\n      <\/div>\n      <div class=\"ols-aqa314-cards-grid\">\n\n        <!-- Card 1: Enthalpy Changes and Standard Conditions -->\n        <a class=\"ols-aqa314-card ols-aqa314-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/enthalpy-changes-and-standard-conditions\/\">\n          <div class=\"ols-aqa314-card-img-wrap\">\n            <div class=\"ols-aqa314-visual ols-aqa314-visual--exo\">\n              <div class=\"ols-aqa314-visual-panel\">\n                <div class=\"ols-aqa314-visual-kicker\">Exo and endo<\/div>\n                <div class=\"ols-aqa314-visual-main\">Enthalpy<br>Changes<\/div>\n                <div class=\"ols-aqa314-config-line\" aria-hidden=\"true\"><span>\u0394H, 298 K<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa314-card-num\">1<\/div>\n            <span class=\"ols-aqa314-card-status ols-aqa314-card-status--available\">Available<\/span>\n          <\/div>\n          <div class=\"ols-aqa314-card-body\">\n            <p class=\"ols-aqa314-card-title\">Enthalpy Changes and Standard Conditions<\/p>\n            <p class=\"ols-aqa314-card-desc\">Exothermic and endothermic reactions, enthalpy level diagrams, activation energy and standard conditions.<\/p>\n            <span class=\"ols-aqa314-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n\n        <!-- Card 2: Standard Enthalpy Changes -->\n        <a class=\"ols-aqa314-card ols-aqa314-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/standard-enthalpy-changes\/\">\n          <div class=\"ols-aqa314-card-img-wrap\">\n            <div class=\"ols-aqa314-visual ols-aqa314-visual--std\">\n              <div class=\"ols-aqa314-visual-panel\">\n                <div class=\"ols-aqa314-visual-kicker\">Definitions<\/div>\n                <div class=\"ols-aqa314-visual-main\">Standard<br>Enthalpies<\/div>\n                <div class=\"ols-aqa314-config-line\" aria-hidden=\"true\"><span>\u0394fH, \u0394cH, \u0394neutH<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa314-card-num\">2<\/div>\n            <span class=\"ols-aqa314-card-status ols-aqa314-card-status--available\">Available<\/span>\n          <\/div>\n          <div class=\"ols-aqa314-card-body\">\n            <p class=\"ols-aqa314-card-title\">Standard Enthalpy Changes<\/p>\n            <p class=\"ols-aqa314-card-desc\">The standard enthalpy change definitions and the equation each one refers to.<\/p>\n            <span class=\"ols-aqa314-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n\n        <!-- Card 3: Calorimetry: Measuring Enthalpy Changes -->\n        <a class=\"ols-aqa314-card ols-aqa314-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/calorimetry-measuring-enthalpy-changes\/\">\n          <div class=\"ols-aqa314-card-img-wrap\">\n            <div class=\"ols-aqa314-visual ols-aqa314-visual--calor\">\n              <div class=\"ols-aqa314-visual-panel\">\n                <div class=\"ols-aqa314-visual-kicker\">q = mc\u0394T<\/div>\n                <div class=\"ols-aqa314-visual-main\">Calorimetry<\/div>\n                <div class=\"ols-aqa314-config-line\" aria-hidden=\"true\"><span>q = mc\u0394T<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa314-card-num\">3<\/div>\n            <span class=\"ols-aqa314-card-status ols-aqa314-card-status--available\">Available<\/span>\n          <\/div>\n          <div class=\"ols-aqa314-card-body\">\n            <p class=\"ols-aqa314-card-title\">Calorimetry: Measuring Enthalpy Changes<\/p>\n            <p class=\"ols-aqa314-card-desc\">Calculating \u0394H from a temperature change, cooling curve corrections, errors and assumptions.<\/p>\n            <span class=\"ols-aqa314-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n\n        <!-- Card 4: Hess's Law and Enthalpy Cycles -->\n        <a class=\"ols-aqa314-card ols-aqa314-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/hess-law-and-enthalpy-cycles\/\">\n          <div class=\"ols-aqa314-card-img-wrap\">\n            <div class=\"ols-aqa314-visual ols-aqa314-visual--hess\">\n              <div class=\"ols-aqa314-visual-panel\">\n                <div class=\"ols-aqa314-visual-kicker\">Enthalpy cycles<\/div>\n                <div class=\"ols-aqa314-visual-main\">Hess&#8217;s<br>Law<\/div>\n                <div class=\"ols-aqa314-config-line\" aria-hidden=\"true\"><span>route A = route B<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa314-card-num\">4<\/div>\n            <span class=\"ols-aqa314-card-status ols-aqa314-card-status--available\">Available<\/span>\n          <\/div>\n          <div class=\"ols-aqa314-card-body\">\n            <p class=\"ols-aqa314-card-title\">Hess&#8217;s Law and Enthalpy Cycles<\/p>\n            <p class=\"ols-aqa314-card-desc\">Building enthalpy cycles and calculating \u0394H from formation and combustion data.<\/p>\n            <span class=\"ols-aqa314-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n\n        <!-- Card 5: Bond Enthalpies -->\n        <a class=\"ols-aqa314-card ols-aqa314-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/bond-enthalpies\/\">\n          <div class=\"ols-aqa314-card-img-wrap\">\n            <div class=\"ols-aqa314-visual ols-aqa314-visual--bond\">\n              <div class=\"ols-aqa314-visual-panel\">\n                <div class=\"ols-aqa314-visual-kicker\">Break and make<\/div>\n                <div class=\"ols-aqa314-visual-main\">Bond<br>Enthalpies<\/div>\n                <div class=\"ols-aqa314-config-line\" aria-hidden=\"true\"><span>broken \u2212 made<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa314-card-num\">5<\/div>\n            <span class=\"ols-aqa314-card-status ols-aqa314-card-status--available\">Available<\/span>\n          <\/div>\n          <div class=\"ols-aqa314-card-body\">\n            <p class=\"ols-aqa314-card-title\">Bond Enthalpies<\/p>\n            <p class=\"ols-aqa314-card-desc\">Mean bond enthalpy, calculating \u0394H from bonds broken and made, and why the answers differ from Hess values.<\/p>\n            <span class=\"ols-aqa314-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- SPECIFICATION -->\n  <section class=\"ols-aqa314-spec-section\">\n    <div class=\"ols-aqa314-container\">\n      <div class=\"ols-aqa314-spec-wrap\">\n        <div class=\"ols-aqa314-spec-pill\">Specification Coverage<\/div>\n        <h2 class=\"ols-aqa314-spec-heading\">3.1.4 Energetics &#8211; AQA A Level Chemistry<\/h2>\n        <p class=\"ols-aqa314-spec-intro-text\">The following AQA specification points outline the knowledge and skills students are expected to demonstrate for Energetics. Wording follows the AQA A Level Chemistry (7405) specification.<\/p>\n        <h3 class=\"ols-aqa314-spec-group-title\">3.1.4 Energetics<\/h3>\n        <div class=\"ols-aqa314-spec-rows\">\n          <div class=\"ols-aqa314-spec-row ols-aqa314-spec-row--light\"><div class=\"ols-aqa314-spec-code\">3.1.4.1<\/div><div class=\"ols-aqa314-spec-text\"><strong>Enthalpy change (\u0394H)<\/strong><div class=\"ols-aqa314-spec-sub-list\"><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">i<\/div><div class=\"ols-aqa314-spec-sub-text\">Reactions can be endothermic or exothermic.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">ii<\/div><div class=\"ols-aqa314-spec-sub-text\">Enthalpy change (\u0394H) is the heat energy change measured under conditions of constant pressure.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">iii<\/div><div class=\"ols-aqa314-spec-sub-text\">Standard enthalpy changes refer to standard conditions, ie 100 kPa and a stated temperature (eg \u0394H<sub>298<\/sub><sup>\u29b5<\/sup>).<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">iv<\/div><div class=\"ols-aqa314-spec-sub-text\">Define standard enthalpy of combustion (\u0394<sub>c<\/sub>H<sup>\u29b5<\/sup>).<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">v<\/div><div class=\"ols-aqa314-spec-sub-text\">Define standard enthalpy of formation (\u0394<sub>f<\/sub>H<sup>\u29b5<\/sup>).<\/div><\/div><\/div><\/div><\/div>\n          <div class=\"ols-aqa314-spec-row ols-aqa314-spec-row--mid\"><div class=\"ols-aqa314-spec-code ols-aqa314-spec-code--mid\">3.1.4.2<\/div><div class=\"ols-aqa314-spec-text\"><strong>Calorimetry<\/strong><div class=\"ols-aqa314-spec-sub-list\"><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">i<\/div><div class=\"ols-aqa314-spec-sub-text\">The heat change, q, in a reaction is given by the equation q = mc\u0394T, where m is the mass of the substance that has a temperature change \u0394T and a specific heat capacity c.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">ii<\/div><div class=\"ols-aqa314-spec-sub-text\">Use this equation to calculate the molar enthalpy change for a reaction.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">iii<\/div><div class=\"ols-aqa314-spec-sub-text\">Use this equation in related calculations.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">RP 2<\/div><div class=\"ols-aqa314-spec-sub-text\">Measurement of an enthalpy change.<\/div><\/div><\/div><\/div><\/div>\n          <div class=\"ols-aqa314-spec-row ols-aqa314-spec-row--light\"><div class=\"ols-aqa314-spec-code\">3.1.4.3<\/div><div class=\"ols-aqa314-spec-text\"><strong>Applications of Hess&#8217;s law<\/strong><div class=\"ols-aqa314-spec-sub-list\"><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">i<\/div><div class=\"ols-aqa314-spec-sub-text\">Hess&#8217;s law.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">ii<\/div><div class=\"ols-aqa314-spec-sub-text\">Use Hess&#8217;s law to perform calculations, including calculation of enthalpy changes for reactions from enthalpies of combustion or from enthalpies of formation.<\/div><\/div><\/div><\/div><\/div>\n          <div class=\"ols-aqa314-spec-row ols-aqa314-spec-row--mid\"><div class=\"ols-aqa314-spec-code ols-aqa314-spec-code--mid\">3.1.4.4<\/div><div class=\"ols-aqa314-spec-text\"><strong>Bond enthalpies<\/strong><div class=\"ols-aqa314-spec-sub-list\"><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">i<\/div><div class=\"ols-aqa314-spec-sub-text\">Mean bond enthalpy.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">ii<\/div><div class=\"ols-aqa314-spec-sub-text\">Use mean bond enthalpies to calculate an approximate value of \u0394H for reactions in the gaseous phase.<\/div><\/div><div class=\"ols-aqa314-spec-sub-row\"><div class=\"ols-aqa314-spec-sub-code\">iii<\/div><div class=\"ols-aqa314-spec-sub-text\">Explain why values from mean bond enthalpy calculations differ from those determined using Hess&#8217;s law.<\/div><\/div><\/div><\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"CollectionPage\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/#webpage\",\n      \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-4-energetics\/\",\n      \"name\": \"3.1.4 Energetics | AQA A Level 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A Level Chemistry &#8211; 3.1 Physical Chemistry 3.1.4Energetics Section 3.1.4 covers the heat energy changes that accompany chemical reactions: exothermic and endothermic reactions, enthalpy change at constant pressure, standard conditions and the standard enthalpies of combustion and formation, calorimetry with q = mc\u0394T, [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"parent":5210,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-8355","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/8355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/comments?post=8355"}],"version-history":[{"count":0,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/8355\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/5210"}],"wp:attachment":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/media?parent=8355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}