{"id":259446,"date":"2025-07-19T01:57:30","date_gmt":"2025-07-19T01:57:30","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=259446"},"modified":"2025-07-19T01:57:32","modified_gmt":"2025-07-19T01:57:32","slug":"which-metal-can-be-used-to-remove-magnesium-ions-mg2-from-solution","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/19\/which-metal-can-be-used-to-remove-magnesium-ions-mg2-from-solution\/","title":{"rendered":"Which metal can be used to remove magnesium ions (Mg2+) from solution"},"content":{"rendered":"\n<p>Which metal can be used to remove magnesium ions (Mg2+) from solution? Which metal can be used to remove magnesium ions (Mg2+) from solution? Al (s) K (s) Zn (s) None of these<\/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 correct answer is <strong>Al (s)<\/strong> (Aluminum).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The removal of magnesium ions (Mg\u00b2\u207a) from solution typically involves a redox reaction where a metal displaces magnesium from its ionic form. In a displacement reaction, a metal with a more negative reduction potential can reduce the magnesium ions (Mg\u00b2\u207a) to magnesium metal (Mg), while the metal itself gets oxidized.<\/p>\n\n\n\n<p>Magnesium (Mg) has a standard reduction potential of -2.37 V, meaning it readily loses electrons and forms ions in solution. For a metal to displace Mg\u00b2\u207a ions from solution, its reduction potential must be more negative than that of magnesium.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aluminum (Al)<\/strong> has a more negative reduction potential of <strong>-1.66 V<\/strong>, meaning it can easily lose electrons and oxidize to Al\u00b3\u207a while reducing Mg\u00b2\u207a ions to solid magnesium metal (Mg). Hence, aluminum can remove magnesium ions from solution via this redox process.<\/li>\n\n\n\n<li><strong>Potassium (K)<\/strong>, with a reduction potential of <strong>-2.93 V<\/strong>, is also more negative than magnesium. However, potassium is highly reactive and would react explosively with water, making it impractical for such a reaction in aqueous solutions.<\/li>\n\n\n\n<li><strong>Zinc (Zn)<\/strong> has a reduction potential of <strong>-0.76 V<\/strong>, which is more positive than that of magnesium, so zinc would not be able to reduce Mg\u00b2\u207a ions from solution.<\/li>\n<\/ul>\n\n\n\n<p>Therefore, <strong>aluminum (Al)<\/strong> is the metal that can effectively remove magnesium ions from solution in this context.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-968.jpeg\" alt=\"\" class=\"wp-image-259447\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Which metal can be used to remove magnesium ions (Mg2+) from solution? Which metal can be used to remove magnesium ions (Mg2+) from solution? Al (s) K (s) Zn (s) None of these The Correct Answer and Explanation is: The correct answer is Al (s) (Aluminum). Explanation: The removal of magnesium ions (Mg\u00b2\u207a) from solution [&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-259446","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259446","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=259446"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/259446\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=259446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=259446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=259446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}