{"id":241805,"date":"2025-07-04T03:36:06","date_gmt":"2025-07-04T03:36:06","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=241805"},"modified":"2025-07-04T03:36:08","modified_gmt":"2025-07-04T03:36:08","slug":"identify-the-lewis-base-in-this-balanced-equation-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/04\/identify-the-lewis-base-in-this-balanced-equation-2\/","title":{"rendered":"Identify the Lewis base in this balanced equation"},"content":{"rendered":"\n

Identify the Lewis base in this balanced equation: 6 H2O + Cr(H2O)63+ \u00e2\u2020\u2019 Cr3+ + 6 H2O<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

In this equation:<\/p>\n\n\n\n

6H2O+Cr(H2O)63+\u2192Cr3++6H2O6 \\text{H}_2\\text{O} + \\text{Cr(H}_2\\text{O)}_6^{3+} \\rightarrow \\text{Cr}^{3+} + 6 \\text{H}_2\\text{O}6H2\u200bO+Cr(H2\u200bO)63+\u200b\u2192Cr3++6H2\u200bO<\/p>\n\n\n\n

The Lewis base is the water molecule (H\u2082O)<\/strong>.<\/p>\n\n\n\n

Explanation:<\/strong><\/p>\n\n\n\n

In the context of Lewis acid-base theory, an acid is a substance that accepts a pair of electrons, and a base is a substance that donates a pair of electrons. In this reaction, the complex ion Cr(H2O)63+\\text{Cr(H}_2\\text{O)}_6^{3+}Cr(H2\u200bO)63+\u200b involves chromium(III) (Cr\u00b3\u207a) surrounded by six water molecules as ligands. The water molecules in this complex are acting as ligands<\/strong>, meaning they donate electron pairs to the metal ion, Cr\u00b3\u207a, which is the Lewis acid in this case because it accepts those electron pairs.<\/p>\n\n\n\n

Here\u2019s a step-by-step breakdown:<\/p>\n\n\n\n

    \n
  1. Chromium(III) Ion<\/strong> (Cr3+\\text{Cr}^{3+}Cr3+): This ion is a Lewis acid because it has a high charge density, which makes it capable of accepting electron pairs.<\/li>\n\n\n\n
  2. Water Molecule<\/strong> (H2O\\text{H}_2\\text{O}H2\u200bO): The oxygen atom in water has lone pairs of electrons that can be donated to a metal ion like Cr\u00b3\u207a. Hence, water is acting as the Lewis base by donating electron pairs to chromium.<\/li>\n<\/ol>\n\n\n\n

    When the complex Cr(H2O)63+\\text{Cr(H}_2\\text{O)}_6^{3+}Cr(H2\u200bO)63+\u200b dissociates, the chromium ion remains as Cr\u00b3\u207a, and the water molecules are released as free H\u2082O molecules. Since the water molecules are donating electron pairs to chromium, they are the Lewis bases in this equation.<\/p>\n\n\n\n

    To summarize, water (H\u2082O)<\/strong> is the Lewis base because it donates electron pairs to the chromium ion, which is the Lewis acid.<\/p>\n\n\n\n

    \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

    Identify the Lewis base in this balanced equation: 6 H2O + Cr(H2O)63+ \u00e2\u2020\u2019 Cr3+ + 6 H2O The Correct Answer and Explanation is: In this equation: 6H2O+Cr(H2O)63+\u2192Cr3++6H2O6 \\text{H}_2\\text{O} + \\text{Cr(H}_2\\text{O)}_6^{3+} \\rightarrow \\text{Cr}^{3+} + 6 \\text{H}_2\\text{O}6H2\u200bO+Cr(H2\u200bO)63+\u200b\u2192Cr3++6H2\u200bO The Lewis base is the water molecule (H\u2082O). Explanation: In the context of Lewis acid-base theory, an acid is a […]<\/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-241805","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/241805","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=241805"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/241805\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=241805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=241805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=241805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}