Which combination will produce a precipitate? A) NaOH(aq) and HCl (aq) B) NaF (aq) and HCl (aq) C) NaC2H3O2 (aq) and HCl (aq) D) KOH (aq) and Mg(NO3)2 (aq) E) AgNO3(aq) and Ca(C2H302)2 (aq)<\/p>\n\n\n\n
The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n The correct answer is: E) AgNO\u2083(aq) and Ca(C\u2082H\u2083O\u2082)\u2082(aq)<\/strong>.<\/p>\n\n\n\n To determine which combination produces a precipitate, we need to consider solubility rules<\/strong> and double displacement (metathesis) reactions<\/strong>, where two aqueous ionic compounds exchange ions. A precipitate forms if the product is insoluble in water<\/strong>.<\/p>\n\n\n\n Let\u2019s briefly evaluate each choice:<\/p>\n\n\n\n A) NaOH(aq) + HCl(aq):<\/strong> B) NaF(aq) + HCl(aq):<\/strong> C) NaC\u2082H\u2083O\u2082(aq) + HCl(aq):<\/strong> D) KOH(aq) + Mg(NO\u2083)\u2082(aq):<\/strong> E) AgNO\u2083(aq) + Ca(C\u2082H\u2083O\u2082)\u2082(aq):<\/strong> Silver salts are generally insoluble<\/strong> except for a few (like AgNO\u2083 and AgF). Silver acetate<\/strong> is known to form a white precipitate<\/strong>, especially at higher concentrations.<\/p>\n\n\n\n E) AgNO\u2083 and Ca(C\u2082H\u2083O\u2082)\u2082<\/strong> produce a precipitate of AgC\u2082H\u2083O\u2082<\/strong> due to its low solubility. This reaction best meets the criteria for precipitate formation based on solubility rules.<\/p>\n","protected":false},"excerpt":{"rendered":" Which combination will produce a precipitate? A) NaOH(aq) and HCl (aq) B) NaF (aq) and HCl (aq) C) NaC2H3O2 (aq) and HCl (aq) D) KOH (aq) and Mg(NO3)2 (aq) E) AgNO3(aq) and Ca(C2H302)2 (aq) The Correct Answer and Explanation is: The correct answer is: E) AgNO\u2083(aq) and Ca(C\u2082H\u2083O\u2082)\u2082(aq). Explanation (300+ words): To determine which combination […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-214926","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=214926"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214926\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=214926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=214926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=214926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\nExplanation (300+ words):<\/strong><\/h3>\n\n\n\n
\n\n\n\n
This is a neutralization reaction<\/strong> between a strong base and a strong acid:
NaOH + HCl \u2192 NaCl + H\u2082O<\/strong>
Both NaCl and water are soluble<\/strong>, so no precipitate<\/strong> forms.<\/p>\n\n\n\n
\n\n\n\n
This is an acid-base reaction:
NaF + HCl \u2192 NaCl + HF<\/strong>
Hydrofluoric acid (HF) is soluble<\/strong> in water. Again, no precipitate<\/strong> forms.<\/p>\n\n\n\n
\n\n\n\n
This results in acetic acid (HC\u2082H\u2083O\u2082), a weak acid:
NaC\u2082H\u2083O\u2082 + HCl \u2192 NaCl + HC\u2082H\u2083O\u2082<\/strong>
All products are soluble<\/strong>, so no precipitate<\/strong>.<\/p>\n\n\n\n
\n\n\n\n
Double displacement:
2KOH + Mg(NO\u2083)\u2082 \u2192 2KNO\u2083 + Mg(OH)\u2082<\/strong>
Magnesium hydroxide (Mg(OH)\u2082) is sparingly soluble<\/strong> and can form a precipitate<\/strong> in sufficient concentration. However, it’s borderline and may not precipitate easily depending on conditions.<\/p>\n\n\n\n
\n\n\n\n
Double displacement:
2AgNO\u2083 + Ca(C\u2082H\u2083O\u2082)\u2082 \u2192 2AgC\u2082H\u2083O\u2082 + Ca(NO\u2083)\u2082<\/strong>
Here, AgC\u2082H\u2083O\u2082 (silver acetate)<\/strong> is only slightly soluble<\/strong>, and in most typical lab conditions, a precipitate forms<\/strong>.<\/p>\n\n\n\n
\n\n\n\nConclusion:<\/strong><\/h3>\n\n\n\n