{"id":246637,"date":"2025-07-07T10:02:02","date_gmt":"2025-07-07T10:02:02","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=246637"},"modified":"2025-07-07T10:02:04","modified_gmt":"2025-07-07T10:02:04","slug":"the-spectator-ions-in-the-reaction-between-aqueous-perchloric-acid-and-aqueous-barium-hydroxide-are","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/07\/the-spectator-ions-in-the-reaction-between-aqueous-perchloric-acid-and-aqueous-barium-hydroxide-are\/","title":{"rendered":"The spectator ions in the reaction between aqueous perchloric acid and aqueous barium hydroxide are"},"content":{"rendered":"\n<p>The spectator ions in the reaction between aqueous perchloric acid and aqueous barium hydroxide are: OH- and ClO4- H+, OH-, ClO4- and Ba+2 H+ and OH- H+ and Ba+2 ClO4- and Ba+2<\/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>H+ and Ba+2<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>In a neutralization reaction, such as the one between <strong>aqueous perchloric acid (HClO4)<\/strong> and <strong>aqueous barium hydroxide (Ba(OH)2)<\/strong>, the <strong>H+<\/strong> ions from the acid and the <strong>OH-<\/strong> ions from the base combine to form water (H2O). The other ions in the solution, which do not participate in the reaction, are called <strong>spectator ions<\/strong>.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Perchloric acid (HClO4)<\/strong> dissociates into <strong>H+<\/strong> and <strong>ClO4-<\/strong> ions in aqueous solution.\n<ul class=\"wp-block-list\">\n<li>The reaction: HClO4\u2192H++ClO4\u2212HClO_4 \\rightarrow H^+ + ClO_4^-HClO4\u200b\u2192H++ClO4\u2212\u200b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Barium hydroxide (Ba(OH)2)<\/strong> dissociates into <strong>Ba+2<\/strong> and <strong>OH-<\/strong> ions.\n<ul class=\"wp-block-list\">\n<li>The reaction: Ba(OH)2\u2192Ba2++2OH\u2212Ba(OH)_2 \\rightarrow Ba^{2+} + 2OH^-Ba(OH)2\u200b\u2192Ba2++2OH\u2212<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>When the two solutions mix, the <strong>H+<\/strong> ions from the acid and the <strong>OH-<\/strong> ions from the base react to form <strong>water<\/strong>:H++OH\u2212\u2192H2OH^+ + OH^- \\rightarrow H_2OH++OH\u2212\u2192H2\u200bO<\/p>\n\n\n\n<p>However, the <strong>ClO4-<\/strong> ions from the acid and <strong>Ba+2<\/strong> ions from the base <strong>do not<\/strong> participate in the neutralization reaction. They remain in the aqueous solution as <strong>spectator ions<\/strong>. Thus, the spectator ions in this reaction are <strong>H+<\/strong> and <strong>Ba+2<\/strong>.<\/p>\n\n\n\n<p>The <strong>OH-<\/strong> and <strong>ClO4-<\/strong> ions are involved in the reaction mechanism (with OH- reacting to form water), so they are not considered spectator ions.<\/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-banner5-905.jpeg\" alt=\"\" class=\"wp-image-246638\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The spectator ions in the reaction between aqueous perchloric acid and aqueous barium hydroxide are: OH- and ClO4- H+, OH-, ClO4- and Ba+2 H+ and OH- H+ and Ba+2 ClO4- and Ba+2 The Correct Answer and Explanation is: The correct answer is H+ and Ba+2. Explanation: In a neutralization reaction, such as the one between [&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-246637","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/246637","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=246637"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/246637\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=246637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=246637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=246637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}