{"id":1047,"date":"2019-02-17T07:27:53","date_gmt":"2019-02-17T07:27:53","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/?page_id=1047"},"modified":"2019-09-09T09:22:07","modified_gmt":"2019-09-09T09:22:07","slug":"marking-guide-unit-3g1-bond-enthalpy","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/marking-guide-unit-3g1-bond-enthalpy\/","title":{"rendered":"MARKING GUIDE: Unit 3G1 \u2013 Bond Enthalpy"},"content":{"rendered":"<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"50\">1.<\/td>\n<td>B<\/td>\n<td width=\"5\"><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>2.<\/td>\n<td>\u00a0D<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>3.<\/td>\n<td>\u00a0A<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>4.<\/td>\n<td>\u00a0B<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>5.<\/td>\n<td>\u00a0B<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>6.<\/td>\n<td>\u00a0D<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>7.<\/td>\n<td>\u00a0C<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>8.<\/td>\n<td>\u00a0C<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>9.<\/td>\n<td>\u00a0A<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>10.<\/td>\n<td>\u00a0B<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"50\">11.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1266\" src=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hchemanswers\/uploads\/sites\/5342\/2019\/03\/Picture5-1.png\" alt=\"\" width=\"953\" height=\"503\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hchemanswers\/uploads\/sites\/5342\/2019\/03\/Picture5-1.png 995w, 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768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/td>\n<\/tr>\n<tr>\n<td>\u00a016.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u00a0Mean bond enthalpy is the average\u00a0<a href=\"https:\/\/www.thoughtco.com\/definition-of-enthalpy-change-605090\">enthalpy change<\/a>\u00a0when one\u00a0<a href=\"https:\/\/www.thoughtco.com\/mole-definition-in-chemistry-606377\">mole<\/a>\u00a0of\u00a0<a href=\"https:\/\/www.thoughtco.com\/definition-of-bonds-in-chemistry-604392\">bonds<\/a>\u00a0are broken.<\/td>\n<\/tr>\n<tr>\n<td>\u00a017.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>a)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0i)<\/td>\n<td>\u00a0\u00a0\u00a0Hydration<\/td>\n<\/tr>\n<tr>\n<td>\u00a0ii)<\/td>\n<td>\u00a0-45 kj mol<sup>-1<\/sup><\/td>\n<\/tr>\n<tr>\n<td>\u00a018.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u00a0-8 kj mol<sup>-1<\/sup><\/td>\n<\/tr>\n<tr>\n<td>\u00a019.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0b)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0i)<\/td>\n<td>\u00a0Enthalpy of formation.<\/td>\n<\/tr>\n<tr>\n<td>\u00a0ii)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>20.<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0a)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0b)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u00a0c)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; 1. B 2. \u00a0D 3. \u00a0A 4. \u00a0B 5. \u00a0B 6. \u00a0D 7. \u00a0C 8. \u00a0C 9. \u00a0A 10. \u00a0B &nbsp; &nbsp; 11. \u00a0 12. \u00a0 \u00a013. \u00a0B \u00a014. \u00a0 \u00a015. \u00a0 \u00a016. \u00a0Mean bond enthalpy is the average\u00a0enthalpy change\u00a0when one\u00a0mole\u00a0of\u00a0bonds\u00a0are broken. \u00a017. a) \u00a0i) \u00a0\u00a0\u00a0Hydration \u00a0ii) \u00a0-45 kj mol-1 \u00a018. \u00a0-8 kj mol-1 &hellip; <a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/marking-guide-unit-3g1-bond-enthalpy\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;MARKING GUIDE: Unit 3G1 \u2013 Bond Enthalpy&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1047","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/pages\/1047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/comments?post=1047"}],"version-history":[{"count":16,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/pages\/1047\/revisions"}],"predecessor-version":[{"id":1537,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/pages\/1047\/revisions\/1537"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hchemanswers\/wp-json\/wp\/v2\/media?parent=1047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}