{"id":119,"date":"2024-10-24T21:34:35","date_gmt":"2024-10-25T01:34:35","guid":{"rendered":"https:\/\/sites.temple.edu\/chemdemo\/?p=119"},"modified":"2024-10-25T16:22:01","modified_gmt":"2024-10-25T20:22:01","slug":"silver-mirror","status":"publish","type":"post","link":"https:\/\/sites.temple.edu\/chemdemo\/2024\/10\/24\/silver-mirror\/","title":{"rendered":"Silver Mirror"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Reference<\/h2>\n\n\n\n<p>Tested Demonstrations in Chemistry, 6th ed., Alyea and Dutton, p. 28; Reduction of Silver by Dextrose &#8211; Demo # Gen.12<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Equipment<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Flasks:<\/strong> 3 squeaky-clean 500 mL round-bottom flasks with rubber stoppers.<\/li>\n\n\n\n<li><em>Cleaning Procedure:<\/em>\n<ul class=\"wp-block-list\">\n<li>Use detergent + 3 washes with distilled water.<\/li>\n\n\n\n<li>Treat with concentrated nitric acid + 4 washes with distilled water.<\/li>\n\n\n\n<li>Store flasks full of distilled water.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Graduated Cylinders:<\/strong> 4\u201310 mL<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Chemicals<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A:<\/strong> 5.0 g honey in 50 mL distilled water. Add 0.6 g tartaric acid, boil, cool, and add 10 mL ethanol to stabilize. Dilute to 100 mL.<\/li>\n\n\n\n<li><strong>B:<\/strong> 4.0 g silver nitrate in 50 mL distilled water.<\/li>\n\n\n\n<li><strong>C:<\/strong> 6.0 g ammonium nitrate in 50 mL distilled water.<\/li>\n\n\n\n<li><strong>D:<\/strong> 10.0 g sodium hydroxide in 100 mL distilled water.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Procedure<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Pour 10 mL of solution A into a flask.<\/li>\n\n\n\n<li>Mix 5 mL of solution B and 5 mL of solution C, then add to the flask.<\/li>\n\n\n\n<li>Quickly pour in 10 mL of solution D.<\/li>\n\n\n\n<li>Stopper the flask and vigorously shake.<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>IMPORTANT:<\/strong> After a few minutes, pour the flask contents down the sink and wash out the flask to prevent an <strong>explosive mixture<\/strong> from forming.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What is Happening<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The silver present initially reacts with ammonia (NH\u2083) to form <strong>Ag(NH\u2083)\u2082\u207a<\/strong>.<\/li>\n\n\n\n<li>The dextrose, a sugar present in honey, gently reduces the silver ions to pure silver metal.<\/li>\n\n\n\n<li>If the reaction occurs too quickly, silver would precipitate in the solution rather than deposit on the walls of the flask.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Reference Tested Demonstrations in Chemistry, 6th ed., Alyea and Dutton, p. 28; Reduction of Silver by Dextrose &#8211; Demo # Gen.12 Equipment Chemicals Procedure What&#8230;<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/sites.temple.edu\/chemdemo\/2024\/10\/24\/silver-mirror\/\">Continue Reading<span class=\"screen-reader-text\">Silver Mirror<\/span><\/a><\/div>\n","protected":false},"author":36673,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-119","post","type-post","status-publish","format-standard","hentry","category-demonstrations","entry"],"_links":{"self":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/users\/36673"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/comments?post=119"}],"version-history":[{"count":1,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":120,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/119\/revisions\/120"}],"wp:attachment":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/media?parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/categories?post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/tags?post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}