{"id":218856,"date":"2025-05-24T14:37:52","date_gmt":"2025-05-24T14:37:52","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=218856"},"modified":"2025-05-24T14:37:54","modified_gmt":"2025-05-24T14:37:54","slug":"compare-the-conjugate-bases-of-these-three-acids","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/24\/compare-the-conjugate-bases-of-these-three-acids\/","title":{"rendered":"Compare the conjugate bases of these three acids."},"content":{"rendered":"\n<p>Compare the conjugate bases of these three acids.<\/p>\n\n\n\n<p>Acid 1: nitrous acid, HNO2<\/p>\n\n\n\n<p>Acid 2: carbonic acid, H2CO3<\/p>\n\n\n\n<p>Acid 3: hydrogen sulfide, HS-<\/p>\n\n\n\n<p>What is the formula for the strongest conjugate base?<\/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<h3 class=\"wp-block-heading\">Correct Answer:<\/h3>\n\n\n\n<p><strong>The strongest conjugate base is: S\u00b2\u207b (sulfide ion)<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation <\/h3>\n\n\n\n<p>To determine the strongest conjugate base among the conjugate bases of the given acids, we first need to identify the conjugate base of each acid. A <strong>conjugate base<\/strong> is formed when an acid donates a proton (H\u207a).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>1. Nitrous Acid (HNO\u2082)<\/strong><br>Conjugate Base: <strong>NO\u2082\u207b<\/strong> (nitrite ion)<br>Nitrous acid is a weak acid, so its conjugate base (NO\u2082\u207b) is relatively strong but still weaker than the conjugate base of a weaker acid.<\/p>\n\n\n\n<p><strong>2. Carbonic Acid (H\u2082CO\u2083)<\/strong><br>Carbonic acid is diprotic (can lose two protons), but we&#8217;ll consider only the first deprotonation:<br>H\u2082CO\u2083 \u2192 H\u207a + HCO\u2083\u207b<br>Conjugate Base: <strong>HCO\u2083\u207b<\/strong> (bicarbonate ion)<br>Carbonic acid is weak, but slightly stronger than nitrous acid, so HCO\u2083\u207b is a slightly weaker conjugate base than NO\u2082\u207b.<\/p>\n\n\n\n<p><strong>3. Hydrogen Sulfide Ion (HS\u207b)<\/strong><br>HS\u207b can act as an acid by losing one more proton:<br>HS\u207b \u2192 H\u207a + S\u00b2\u207b<br>Conjugate Base: <strong>S\u00b2\u207b<\/strong> (sulfide ion)<br>HS\u207b is a much weaker acid than the previous two. In fact, it is already a conjugate base itself (of H\u2082S), and losing another proton forms S\u00b2\u207b, an extremely strong base.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Strength of Conjugate Base<\/strong><br>The strength of a conjugate base is inversely related to the strength of its corresponding acid. The <strong>weaker the acid, the stronger its conjugate base<\/strong>.<\/p>\n\n\n\n<p>Among the three:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HNO\u2082 and H\u2082CO\u2083 are weak acids.<\/li>\n\n\n\n<li>HS\u207b is a weak acid but much weaker, meaning <strong>S\u00b2\u207b is the strongest base<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Thus, <strong>S\u00b2\u207b<\/strong> (sulfide ion), being the conjugate base of the very weak acid HS\u207b, is the <strong>strongest conjugate base<\/strong> among the three.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/05\/image-366.png\" alt=\"\" class=\"wp-image-218857\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Compare the conjugate bases of these three acids. Acid 1: nitrous acid, HNO2 Acid 2: carbonic acid, H2CO3 Acid 3: hydrogen sulfide, HS- What is the formula for the strongest conjugate base? The Correct Answer and Explanation is: Correct Answer: The strongest conjugate base is: S\u00b2\u207b (sulfide ion) Explanation To determine the strongest conjugate base [&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-218856","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218856","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=218856"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218856\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=218856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=218856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=218856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}