Which combination will produce a precipitate? a) NH4OH(aq) and HCl(aq) b) AgNO3(aq) and CaCl2(aq) c) NaOH(aq) and HCl(aq) d) NaCl(aq) and H2SO4(aq)<\/p>\n\n\n\n
The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n When solutions of ionic compounds are mixed, a precipitate forms if an insoluble product results from a double displacement reaction. Let’s analyze each combination:<\/p>\n\n\n\n a) NH\u2084OH(aq) and HCl(aq):<\/strong> b) AgNO\u2083(aq) and CaCl\u2082(aq):<\/strong> c) NaOH(aq) and HCl(aq):<\/strong> d) NaCl(aq) and H\u2082SO\u2084(aq):<\/strong> Conclusion:<\/strong> Which combination will produce a precipitate? a) NH4OH(aq) and HCl(aq) b) AgNO3(aq) and CaCl2(aq) c) NaOH(aq) and HCl(aq) d) NaCl(aq) and H2SO4(aq) The Correct Answer and Explanation is : Correct Answer: b) AgNO\u2083(aq) and CaCl\u2082(aq) Explanation: When solutions of ionic compounds are mixed, a precipitate forms if an insoluble product results from a double displacement […]<\/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-185070","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/185070","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=185070"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/185070\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=185070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=185070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=185070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Correct Answer: b) AgNO\u2083(aq) and CaCl\u2082(aq)<\/strong><\/h3>\n\n\n\n
Explanation:<\/h3>\n\n\n\n
\n\n\n\n
This is an acid-base reaction where NH\u2084OH<\/strong> (ammonium hydroxide) reacts with HCl<\/strong> (hydrochloric acid) to form NH\u2084Cl<\/strong> (ammonium chloride, a soluble salt) and water:
[
\\text{NH\u2084OH} + \\text{HCl} \\rightarrow \\text{NH\u2084Cl} + \\text{H\u2082O}
]
No precipitate forms, as all products are soluble.<\/p>\n\n\n\n
\n\n\n\n
This reaction involves the mixing of AgNO\u2083<\/strong> (silver nitrate) and CaCl\u2082<\/strong> (calcium chloride). A double displacement reaction occurs:
[
\\text{2AgNO\u2083} + \\text{CaCl\u2082} \\rightarrow \\text{2AgCl} \\downarrow + \\text{Ca(NO\u2083)\u2082}
]
AgCl<\/strong> (silver chloride) is insoluble and forms a white precipitate, while Ca(NO\u2083)\u2082<\/strong> (calcium nitrate) remains in solution. Hence, a precipitate forms in this reaction.<\/p>\n\n\n\n
\n\n\n\n
This is a neutralization reaction between a strong acid (HCl<\/strong>) and a strong base (NaOH<\/strong>) to form water and NaCl<\/strong> (sodium chloride, a soluble salt):
[
\\text{NaOH} + \\text{HCl} \\rightarrow \\text{NaCl} + \\text{H\u2082O}
]
No precipitate forms, as all products are soluble.<\/p>\n\n\n\n
\n\n\n\n
When NaCl<\/strong> (sodium chloride) reacts with H\u2082SO\u2084<\/strong> (sulfuric acid), no precipitate forms. Instead, this reaction produces gaseous HCl (hydrogen chloride) under certain conditions:
[
\\text{NaCl} + \\text{H\u2082SO\u2084} \\rightarrow \\text{HCl(g)} + \\text{NaHSO\u2084}
]
This is not a precipitation reaction.<\/p>\n\n\n\n
\n\n\n\n
Only b) AgNO\u2083 and CaCl\u2082<\/strong> produces a precipitate, AgCl<\/strong>, based on the solubility rules for ionic compounds.<\/p>\n","protected":false},"excerpt":{"rendered":"