{"id":197344,"date":"2025-03-07T05:58:49","date_gmt":"2025-03-07T05:58:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=197344"},"modified":"2025-03-07T05:59:03","modified_gmt":"2025-03-07T05:59:03","slug":"what-is-the-conjugate-acid-of-hpo42%e2%88%92","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/07\/what-is-the-conjugate-acid-of-hpo42%e2%88%92\/","title":{"rendered":"What is the conjugate acid of HPO42\u2212"},"content":{"rendered":"\n<p>What is the conjugate acid of HPO42\u2212 ?<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>The conjugate acid of <strong>HPO\u2084\u00b2\u207b<\/strong> is <strong>H\u2082PO\u2084\u207b (dihydrogen phosphate ion).<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Understanding Conjugate Acids and Bases<\/strong><br>In acid-base chemistry, a <strong>conjugate acid<\/strong> is formed when a base gains a proton (<strong>H\u207a<\/strong>). Conversely, a <strong>conjugate base<\/strong> is formed when an acid loses a proton.<\/li>\n\n\n\n<li><strong>Determining the Conjugate Acid of HPO\u2084\u00b2\u207b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>hydrogen phosphate ion (HPO\u2084\u00b2\u207b)<\/strong> can act as a base and accept a proton (<strong>H\u207a<\/strong>).<\/li>\n\n\n\n<li>When <strong>HPO\u2084\u00b2\u207b<\/strong> gains one proton, it forms <strong>H\u2082PO\u2084\u207b (dihydrogen phosphate ion).<\/strong><\/li>\n\n\n\n<li>This reaction is:<br>[<br>HPO\u2084^{2-} + H^+ \\rightarrow H_2PO_4^-<br>]<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Why is H\u2082PO\u2084\u207b the Correct Answer?<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Phosphate-containing species exist in equilibrium in aqueous solutions:\n<ul class=\"wp-block-list\">\n<li><strong>H\u2083PO\u2084 (phosphoric acid) \u2192 H\u2082PO\u2084\u207b (dihydrogen phosphate) \u2192 HPO\u2084\u00b2\u207b (hydrogen phosphate) \u2192 PO\u2084\u00b3\u207b (phosphate ion)<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Since <strong>HPO\u2084\u00b2\u207b<\/strong> is a base in this case, adding <strong>H\u207a<\/strong> results in <strong>H\u2082PO\u2084\u207b<\/strong>, which is its conjugate acid.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Relevance in Buffer Systems<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The phosphate system (<strong>H\u2082PO\u2084\u207b\/HPO\u2084\u00b2\u207b<\/strong>) is a crucial buffer in biological systems.<\/li>\n\n\n\n<li>It helps maintain pH stability in cells and blood.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/files.oaiusercontent.com\/file-Qwe2SK68GwLx3JwXQVcvSU?se=2025-03-07T06%3A02%3A31Z&amp;sp=r&amp;sv=2024-08-04&amp;sr=b&amp;rscc=max-age%3D604800%2C%20immutable%2C%20private&amp;rscd=attachment%3B%20filename%3D36268336-8ba6-45d0-8b12-f1c9baf041f2.webp&amp;sig=zyo2KGUJ4zAKlJwBhjtqDi1prBGtd2FiD%2Bkxj2XXpZg%3D\" alt=\"\"\/><\/figure>\n\n\n\n<p>Here is an image illustrating the conjugate acid-base relationship of phosphate species in solution, showing the stepwise loss or gain of protons (H\u207a). <\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the conjugate acid of HPO42\u2212 ? The correct answer and explanation is : The conjugate acid of HPO\u2084\u00b2\u207b is H\u2082PO\u2084\u207b (dihydrogen phosphate ion). Explanation: Here is an image illustrating the conjugate acid-base relationship of phosphate species in solution, showing the stepwise loss or gain of protons (H\u207a).<\/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-197344","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/197344","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=197344"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/197344\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=197344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=197344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=197344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}