{"id":233712,"date":"2025-06-13T10:39:04","date_gmt":"2025-06-13T10:39:04","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=233712"},"modified":"2025-06-13T10:39:09","modified_gmt":"2025-06-13T10:39:09","slug":"kohaq-cuso4aq-what-type-of-reaction","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/13\/kohaq-cuso4aq-what-type-of-reaction\/","title":{"rendered":"KOH(aq) + CuSO4(aq) = What type of reaction"},"content":{"rendered":"\n<p>KOH(aq) + CuSO4(aq) = What type of reaction? synthesis, decomposition, single displacement, or double displacement<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The reaction between potassium hydroxide (KOH) and copper(II) sulfate (CuSO\u2084) is a <strong>double displacement<\/strong> reaction.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Correct Answer:<\/strong><\/h3>\n\n\n\n<p><strong>Double Displacement Reaction<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation:<\/strong><\/h3>\n\n\n\n<p>A double displacement reaction, also known as a <strong>metathesis<\/strong> reaction, occurs when parts of two ionic compounds are exchanged to form two new compounds. This typically happens in aqueous solutions, and one of the products is often a precipitate, a gas, or a weak electrolyte such as water.<\/p>\n\n\n\n<p>In this case, when <strong>KOH (aq)<\/strong> and <strong>CuSO\u2084 (aq)<\/strong> are mixed, the positive ions (K\u207a and Cu\u00b2\u207a) and the negative ions (OH\u207b and SO\u2084\u00b2\u207b) rearrange. Potassium (K\u207a) pairs with sulfate (SO\u2084\u00b2\u207b) to form potassium sulfate (K\u2082SO\u2084), and copper (Cu\u00b2\u207a) pairs with hydroxide (OH\u207b) to form copper(II) hydroxide (Cu(OH)\u2082), which is an <strong>insoluble solid<\/strong> and precipitates out of the solution.<\/p>\n\n\n\n<p>The <strong>balanced chemical equation<\/strong> for the reaction is:<\/p>\n\n\n\n<p><strong>2 KOH (aq) + CuSO\u2084 (aq) \u2192 Cu(OH)\u2082 (s) + K\u2082SO\u2084 (aq)<\/strong><\/p>\n\n\n\n<p>Here, Cu(OH)\u2082 is the <strong>precipitate<\/strong>, and K\u2082SO\u2084 remains in solution.<\/p>\n\n\n\n<p>This reaction is not a <strong>synthesis<\/strong> reaction (which involves two or more reactants forming a single product), nor is it <strong>decomposition<\/strong> (which breaks down a single compound into simpler substances), nor <strong>single displacement<\/strong> (where one element replaces another in a compound). Instead, it is clearly a <strong>double displacement reaction<\/strong>, because two compounds exchange their ions to form two new compounds.<\/p>\n\n\n\n<p>This type of reaction is common in chemistry labs and industrial processes and is often used to identify the presence of certain ions based on the formation of precipitates.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-310.jpeg\" alt=\"\" class=\"wp-image-233713\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>KOH(aq) + CuSO4(aq) = What type of reaction? synthesis, decomposition, single displacement, or double displacement The Correct Answer and Explanation is: The reaction between potassium hydroxide (KOH) and copper(II) sulfate (CuSO\u2084) is a double displacement reaction. Correct Answer: Double Displacement Reaction Explanation: A double displacement reaction, also known as a metathesis reaction, occurs when parts [&hellip;]<\/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-233712","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233712","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=233712"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233712\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=233712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=233712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=233712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}