{"id":231674,"date":"2025-06-11T09:48:49","date_gmt":"2025-06-11T09:48:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=231674"},"modified":"2025-06-11T09:48:52","modified_gmt":"2025-06-11T09:48:52","slug":"which-pairs-of-reactants-will-result-in-a-chemical-reaction-4","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/11\/which-pairs-of-reactants-will-result-in-a-chemical-reaction-4\/","title":{"rendered":"Which pairs of reactants will result in a chemical reaction"},"content":{"rendered":"\n<p>Which pairs of reactants will result in a chemical reaction? Refer to the activity series as needed. Ni(s) + MgCl2(aq) Pb(s) + Cu(NO2)(aq) Mn(s) + AgClO2(aq) Pt(s) + CoBr2(aq)<\/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<h6 class=\"wp-block-heading\">ChatGPT said:<\/h6>\n\n\n\n<p><strong>Answer:<\/strong><br>The pairs of reactants that will result in a chemical reaction are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mn(s) + AgClO\u2082(aq)<\/strong><\/li>\n\n\n\n<li><strong>Pb(s) + Cu(NO\u2082)\u2082(aq)<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Explanation<\/strong><\/p>\n\n\n\n<p>To determine whether a chemical reaction will occur between a solid metal and an aqueous solution of an ionic compound, we refer to the <strong>activity series of metals<\/strong>. The activity series ranks metals based on their ability to displace other metals from solution (i.e., their tendency to be oxidized). A metal that is higher in the series will displace a metal that is lower in the series from its compound in solution. This is known as a <strong>single displacement reaction<\/strong>.<\/p>\n\n\n\n<p>Let\u2019s examine each pair:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ni(s) + MgCl\u2082(aq):<\/strong><br>Magnesium (Mg\u00b2\u207a) is higher on the activity series than nickel (Ni), meaning nickel is less reactive and <strong>cannot displace<\/strong> magnesium from its compound.<br><strong>No reaction<\/strong> occurs.<\/li>\n\n\n\n<li><strong>Pb(s) + Cu(NO\u2082)\u2082(aq):<\/strong><br>Lead (Pb) is <strong>higher<\/strong> on the activity series than copper (Cu), so it can displace copper from its compound. The reaction is:<br><strong>Pb(s) + Cu\u00b2\u207a(aq) \u2192 Pb\u00b2\u207a(aq) + Cu(s)<\/strong><br><strong>Reaction occurs.<\/strong><\/li>\n\n\n\n<li><strong>Mn(s) + AgClO\u2082(aq):<\/strong><br>Manganese (Mn) is <strong>much higher<\/strong> on the activity series than silver (Ag), so it can easily displace silver from its salt. The reaction is:<br><strong>Mn(s) + Ag\u207a(aq) \u2192 Mn\u00b2\u207a(aq) + Ag(s)<\/strong><br><strong>Reaction occurs.<\/strong><\/li>\n\n\n\n<li><strong>Pt(s) + CoBr\u2082(aq):<\/strong><br>Platinum (Pt) is a <strong>noble metal<\/strong> and sits near the bottom of the activity series, making it very unreactive. Cobalt (Co) is <strong>above<\/strong> platinum, so platinum <strong>cannot displace<\/strong> cobalt from its salt.<br><strong>No reaction<\/strong> occurs.<\/li>\n<\/ol>\n\n\n\n<p>In summary, only manganese and lead are reactive enough in their respective pairs to displace the metal cation in solution. The activity series is a vital tool in predicting such displacement reactions.<\/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-banner4-944.jpeg\" alt=\"\" class=\"wp-image-231675\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Which pairs of reactants will result in a chemical reaction? Refer to the activity series as needed. Ni(s) + MgCl2(aq) Pb(s) + Cu(NO2)(aq) Mn(s) + AgClO2(aq) Pt(s) + CoBr2(aq) The Correct Answer and Explanation is: ChatGPT said: Answer:The pairs of reactants that will result in a chemical reaction are: Explanation To determine whether a chemical [&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-231674","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/231674","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=231674"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/231674\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=231674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=231674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=231674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}