what is the color of precipitate when silver nitrate (BaCl2) is added to S2O3-2 (thiosulfate)?<\/p>\n\n\n\n
The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n Correct Answer:<\/strong> White precipitate (initially), which may dissolve or turn yellowish with time due to complex formation.<\/strong><\/p>\n\n\n\n When silver nitrate (AgNO\u2083)<\/strong> is added to a solution containing thiosulfate ions (S\u2082O\u2083\u00b2\u207b)<\/strong>, a reaction occurs between the silver ions (Ag\u207a)<\/strong> and thiosulfate ions<\/strong>.<\/p>\n\n\n\n Initially, a white precipitate<\/strong> forms. This white solid is silver thiosulfate (Ag\u2082S\u2082O\u2083)<\/strong>. However, the chemistry doesn\u2019t stop there\u2014thiosulfate is a complexing agent<\/strong>, and it has the ability to form soluble complexes<\/strong> with silver ions.<\/p>\n\n\n\n The primary reaction is: 2Ag++S2O32\u2212\u2192Ag2S2O3(s)(white precipitate)2Ag^+ + S_2O_3^{2-} \\rightarrow Ag_2S_2O_3(s) \\quad \\text{(white precipitate)}<\/p>\n\n\n\n But in excess thiosulfate, this precipitate can dissolve<\/strong>, forming a soluble complex<\/strong>: Ag2S2O3(s)+S2O32\u2212\u21922[Ag(S2O3)2]3\u2212(soluble complex)Ag_2S_2O_3(s) + S_2O_3^{2-} \\rightarrow 2[Ag(S_2O_3)_2]^{3-} \\quad \\text{(soluble complex)}<\/p>\n\n\n\n This means that while a white precipitate may form initially<\/strong>, it may disappear upon standing<\/strong> or in excess thiosulfate due to complexation. In some cases, the solution may appear yellowish<\/strong> due to formation of silver-thiosulfate complexes or due to decomposition of thiosulfate to elemental sulfur, which can also give a milky or yellow appearance<\/strong>.<\/p>\n\n\n\n This reaction is an important demonstration of how complex ion formation<\/strong> can affect solubility and precipitate behavior in aqueous chemistry.<\/p>\n","protected":false},"excerpt":{"rendered":" what is the color of precipitate when silver nitrate (BaCl2) is added to S2O3-2 (thiosulfate)? The correct answer and explanation is: Correct Answer: White precipitate (initially), which may dissolve or turn yellowish with time due to complex formation. Explanation: When silver nitrate (AgNO\u2083) is added to a solution containing thiosulfate ions (S\u2082O\u2083\u00b2\u207b), a reaction occurs […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-23684","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/23684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=23684"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/23684\/revisions"}],"predecessor-version":[{"id":23685,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/23684\/revisions\/23685"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=23684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=23684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=23684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\nExplanation:<\/strong><\/h3>\n\n\n\n
Summary:<\/strong><\/h3>\n\n\n\n
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