{"id":261726,"date":"2025-07-20T08:10:47","date_gmt":"2025-07-20T08:10:47","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=261726"},"modified":"2025-07-20T08:10:49","modified_gmt":"2025-07-20T08:10:49","slug":"which-of-the-following-is-a-bronsted-lowry-base-but-not-an-arrhenius-base-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/20\/which-of-the-following-is-a-bronsted-lowry-base-but-not-an-arrhenius-base-2\/","title":{"rendered":"Which of the following is a Bronsted-Lowry base but NOT an Arrhenius base"},"content":{"rendered":"\n


Which of the following is a Bronsted-Lowry base but NOT an Arrhenius base? NaOH NH3 KOH HCI<\/p>\n\n\n\n

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

The correct answer is NH3<\/strong> (Ammonia).<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

To understand why NH3 is a Bronsted-Lowry base but not an Arrhenius base, we first need to differentiate between the Arrhenius<\/strong> and Bronsted-Lowry<\/strong> definitions of acids and bases.<\/p>\n\n\n\n

1. Arrhenius Definition:<\/strong><\/h4>\n\n\n\n
    \n
  • According to the Arrhenius definition<\/strong>, an Arrhenius base<\/strong> is a substance that dissociates in water to produce hydroxide ions (OH\u207b).<\/li>\n\n\n\n
  • For example, NaOH, KOH, and even HCl, when dissolved in water, dissociate to release OH\u207b or H\u207a ions, respectively. NaOH dissociates to produce Na\u207a and OH\u207b, and KOH dissociates to produce K\u207a and OH\u207b.<\/li>\n<\/ul>\n\n\n\n

    2. Bronsted-Lowry Definition:<\/strong><\/h4>\n\n\n\n
      \n
    • According to the Bronsted-Lowry definition<\/strong>, a Bronsted-Lowry base<\/strong> is any substance that can accept<\/strong> a proton (H\u207a).<\/li>\n\n\n\n
    • Ammonia (NH\u2083), for example, can accept a proton (H\u207a) from water to form ammonium ions (NH\u2084\u207a). The reaction looks like this: NH3+H2O\u2192NH4++OH\u2212NH_3 + H_2O \\rightarrow NH_4^+ + OH^-NH3\u200b+H2\u200bO\u2192NH4+\u200b+OH\u2212<\/li>\n\n\n\n
    • NH\u2083 does not produce OH\u207b directly by dissociation in water. Instead, it accepts a proton from water molecules, which in turn generates OH\u207b, making NH\u2083 a Bronsted-Lowry base<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      Why NH\u2083 is not<\/strong> an Arrhenius base:<\/h4>\n\n\n\n
        \n
      • NH\u2083<\/strong> does not directly release hydroxide ions (OH\u207b) when dissolved in water. It accepts<\/strong> protons, which makes it a Bronsted-Lowry base<\/strong>, but it doesn’t fit the strict criteria for an Arrhenius base<\/strong>, which requires a substance to release OH\u207b ions directly.<\/li>\n<\/ul>\n\n\n\n

        In summary, while NH\u2083 is a Bronsted-Lowry base (because it accepts protons), it is not<\/strong> an Arrhenius base, as it does not directly produce hydroxide ions.<\/p>\n\n\n\n

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

        Which of the following is a Bronsted-Lowry base but NOT an Arrhenius base? NaOH NH3 KOH HCI The Correct Answer and Explanation is: The correct answer is NH3 (Ammonia). Explanation: To understand why NH3 is a Bronsted-Lowry base but not an Arrhenius base, we first need to differentiate between the Arrhenius and Bronsted-Lowry definitions of […]<\/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-261726","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/261726","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=261726"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/261726\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=261726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=261726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=261726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}