{"id":3902,"date":"2026-03-26T22:26:12","date_gmt":"2026-03-27T02:26:12","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/?post_type=chapter&#038;p=3902"},"modified":"2026-04-08T16:14:49","modified_gmt":"2026-04-08T20:14:49","slug":"quiz-3","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/chapter\/quiz-3\/","title":{"raw":"Quiz (Chapters IV &amp; V)","rendered":"Quiz (Chapters IV &amp; V)"},"content":{"raw":"1. A Fe-S-H 2 O Eh-pH diagram is provided below. The iron-sulfur species is pyrite (FeS 2 ). Pyrite itself is not valuable in hydrometallurgy, but it may contain finely disseminated gold. Then pyrite can be leached to free the gold, which can then be leached with cyanide. Pyrite leaching can be accomplished using near-ambient conditions (bioleaching using sulfur-oxidizing bacteria) through to autoclave leaching at &gt;200\u00b0C.\r\n\r\n[h5p id=\"26\"]\r\n\r\n[h5p id=\"27\"]\r\n\r\n[h5p id=\"28\"]\r\n\r\n[h5p id=\"29\"]","rendered":"<p>1. A Fe-S-H 2 O Eh-pH diagram is provided below. The iron-sulfur species is pyrite (FeS 2 ). Pyrite itself is not valuable in hydrometallurgy, but it may contain finely disseminated gold. Then pyrite can be leached to free the gold, which can then be leached with cyanide. Pyrite leaching can be accomplished using near-ambient conditions (bioleaching using sulfur-oxidizing bacteria) through to autoclave leaching at &gt;200\u00b0C.<\/p>\n<div id=\"h5p-26\">\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-26\" class=\"h5p-iframe\" data-content-id=\"26\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Ch5 Quiz Q1\"><\/iframe><\/div>\n<\/div>\n<div id=\"h5p-27\">\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-27\" class=\"h5p-iframe\" data-content-id=\"27\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Ch5 Quiz Q2\"><\/iframe><\/div>\n<\/div>\n<div id=\"h5p-28\">\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-28\" class=\"h5p-iframe\" data-content-id=\"28\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Ch5 Quiz Q3\"><\/iframe><\/div>\n<\/div>\n<div id=\"h5p-29\">\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-29\" class=\"h5p-iframe\" data-content-id=\"29\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Ch5 Quiz Q4\"><\/iframe><\/div>\n<\/div>\n","protected":false},"author":2529,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-3902","chapter","type-chapter","status-publish","hentry"],"part":2336,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapters\/3902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/wp\/v2\/users\/2529"}],"version-history":[{"count":2,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapters\/3902\/revisions"}],"predecessor-version":[{"id":3921,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapters\/3902\/revisions\/3921"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/parts\/2336"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapters\/3902\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/wp\/v2\/media?parent=3902"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/pressbooks\/v2\/chapter-type?post=3902"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/wp\/v2\/contributor?post=3902"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/hydrometallurgy\/wp-json\/wp\/v2\/license?post=3902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}