{"id":233320,"date":"2025-06-13T04:35:15","date_gmt":"2025-06-13T04:35:15","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=233320"},"modified":"2025-06-13T04:35:17","modified_gmt":"2025-06-13T04:35:17","slug":"which-is-a-correct-lewis-structure-for-carbonic-acid-h2-c03","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/13\/which-is-a-correct-lewis-structure-for-carbonic-acid-h2-c03\/","title":{"rendered":"Which is a correct Lewis structure for carbonic acid, H2 C03"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Which is a correct Lewis structure for carbonic acid, H2 C03<br>? A. B. C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><strong>Correct Answer: C.<\/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>Lewis Structure of Carbonic Acid (H\u2082CO\u2083)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Carbonic acid is a weak diprotic acid with the molecular formula <strong>H\u2082CO\u2083<\/strong>, composed of two hydrogen atoms, one carbon atom, and three oxygen atoms. The correct Lewis structure is essential to understand its molecular geometry, bonding, and acid-base behavior.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Correct Lewis Structure Explanation:<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The correct structure (Option C) shows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A central <strong>carbon atom<\/strong> double-bonded to one oxygen atom (C=O).<\/li>\n\n\n\n<li>Two <strong>hydroxyl groups (-OH)<\/strong> each bonded to the central carbon through a single bond (C\u2013O\u2013H).<\/li>\n\n\n\n<li>Each oxygen atom in the hydroxyl groups has two lone pairs of electrons.<\/li>\n\n\n\n<li>The carbon atom has four bonds total (satisfying the octet rule): one double bond and two single bonds.<\/li>\n\n\n\n<li>Each hydrogen is bonded to an oxygen atom, not directly to carbon.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The Lewis structure of carbonic acid can be written as:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">mathematicaCopyEdit<code>       O\n       ||\nH\u2013O\u2013C\u2013O\u2013H\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">In this structure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>carbon<\/strong> atom forms one double bond with an oxygen and two single bonds with the hydroxyl oxygens.<\/li>\n\n\n\n<li>Each <strong>oxygen<\/strong> in the \u2013OH group has two lone pairs.<\/li>\n\n\n\n<li>The double-bonded oxygen has two lone pairs as well.<\/li>\n\n\n\n<li>All atoms obey the octet rule (except hydrogen, which needs only two electrons).<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Why This Is Correct:<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">This structure minimizes formal charges and satisfies the octet rule for all atoms involved:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Carbon<\/strong> has 4 bonds (no lone pairs).<\/li>\n\n\n\n<li>Each <strong>oxygen<\/strong> has 2 bonds and 2 lone pairs, resulting in a formal charge of zero.<\/li>\n\n\n\n<li><strong>Hydrogens<\/strong> each form one bond and are stable.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Incorrect structures often misplace the hydrogen atoms (e.g., bonding H directly to carbon), violate the octet rule, or create unbalanced formal charges.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thus, <strong>Option C<\/strong> is the correct Lewis structure for carbonic acid.<\/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-banner5-446.jpeg\" alt=\"\" class=\"wp-image-233321\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Which is a correct Lewis structure for carbonic acid, H2 C03? A. B. C. The Correct Answer and Explanation is: Correct Answer: C. Lewis Structure of Carbonic Acid (H\u2082CO\u2083) Carbonic acid is a weak diprotic acid with the molecular formula H\u2082CO\u2083, composed of two hydrogen atoms, one carbon atom, and three oxygen atoms. The correct [&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-233320","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233320","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=233320"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233320\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=233320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=233320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=233320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}