{"id":194544,"date":"2025-02-24T09:00:03","date_gmt":"2025-02-24T09:00:03","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=194544"},"modified":"2025-02-24T09:00:07","modified_gmt":"2025-02-24T09:00:07","slug":"determine-whether-aqueous-solutions-of-the-following-salts-are-acidic-basic-or-neutral-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/24\/determine-whether-aqueous-solutions-of-the-following-salts-are-acidic-basic-or-neutral-2\/","title":{"rendered":"Determine whether aqueous solutions of the following salts are acidic, basic, or neutral"},"content":{"rendered":"\n

Determine whether aqueous solutions of the following salts are acidic, basic, or neutral:<\/p>\n\n\n\n

(a) K2CO3<\/p>\n\n\n\n

(b) CaCl2<\/p>\n\n\n\n

(c) KH2PO4<\/p>\n\n\n\n

(d) (NH4)2CO3<\/p>\n\n\n\n

Can you show work that was used to find out of the compound was acidic, basic, neutral.<\/p>\n\n\n\n

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

To determine whether aqueous solutions of the given salts are acidic, basic, or neutral<\/strong>, we analyze the ions produced upon dissociation<\/strong> and their interactions with water. The key concept is that salts derived from strong acids and strong bases<\/strong> form neutral<\/strong> solutions, while those derived from weak acids and\/or weak bases<\/strong> can form acidic or basic<\/strong> solutions.<\/p>\n\n\n\n

Analysis of Each Salt<\/strong><\/h3>\n\n\n\n

(a) K\u2082CO\u2083 (Potassium Carbonate) – Basic<\/strong><\/h4>\n\n\n\n
    \n
  • Dissociation:
    [
    K_2CO_3 \\rightarrow 2K^+ + CO_3^{2-}
    ]<\/li>\n\n\n\n
  • K\u207a<\/strong> comes from KOH (a strong base)<\/strong> \u2013 does not hydrolyze.<\/li>\n\n\n\n
  • CO\u2083\u00b2\u207b<\/strong> comes from H\u2082CO\u2083 (a weak acid)<\/strong> \u2013 hydrolyzes in water:
    [
    CO_3^{2-} + H_2O \\rightleftharpoons HCO_3^- + OH^-
    ]<\/li>\n\n\n\n
  • Produces OH\u207b (hydroxide ions), making the solution basic.<\/strong><\/li>\n<\/ul>\n\n\n\n

    (b) CaCl\u2082 (Calcium Chloride) – Neutral<\/strong><\/h4>\n\n\n\n
      \n
    • Dissociation:
      [
      CaCl_2 \\rightarrow Ca^{2+} + 2Cl^-
      ]<\/li>\n\n\n\n
    • Ca\u00b2\u207a<\/strong> (from strong base Ca(OH)\u2082) and Cl\u207b<\/strong> (from strong acid HCl) do not hydrolyze.<\/li>\n\n\n\n
    • Since neither ion affects pH, the solution is neutral<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      (c) KH\u2082PO\u2084 (Potassium Dihydrogen Phosphate) – Acidic<\/strong><\/h4>\n\n\n\n
        \n
      • Dissociation:
        [
        KH_2PO_4 \\rightarrow K^+ + H_2PO_4^-
        ]<\/li>\n\n\n\n
      • H\u2082PO\u2084\u207b<\/strong> is the conjugate base of H\u2083PO\u2084 (a weak acid)<\/strong> and can donate a proton:
        [
        H_2PO_4^- \\rightleftharpoons HPO_4^{2-} + H^+
        ]<\/li>\n\n\n\n
      • Releases H\u207a (protons), making the solution acidic.<\/strong><\/li>\n<\/ul>\n\n\n\n

        (d) (NH\u2084)\u2082CO\u2083 (Ammonium Carbonate) – Basic<\/strong><\/h4>\n\n\n\n
          \n
        • Dissociation:
          [
          (NH_4)_2CO_3 \\rightarrow 2NH_4^+ + CO_3^{2-}
          ]<\/li>\n\n\n\n
        • NH\u2084\u207a (from NH\u2083, a weak base) hydrolyzes to release H\u207a<\/strong>:
          [
          NH_4^+ + H_2O \\rightleftharpoons NH_3 + H_3O^+
          ]<\/li>\n\n\n\n
        • CO\u2083\u00b2\u207b hydrolyzes to produce OH\u207b<\/strong>.<\/li>\n\n\n\n
        • Since CO\u2083\u00b2\u207b has a stronger basic effect than NH\u2084\u207a’s acidic effect<\/strong>, the solution is basic<\/strong>.<\/li>\n<\/ul>\n\n\n\n

          Final Answers:<\/strong><\/h3>\n\n\n\n

          (a) Basic<\/strong>
          (b) Neutral<\/strong>
          (c) Acidic<\/strong>
          (d) Basic<\/strong><\/p>\n\n\n\n

          Image Representation<\/strong><\/h3>\n\n\n\n

          I will now generate an image illustrating the dissociation of these salts and the hydrolysis reactions involved.<\/p>\n\n\n\n

          \"\"<\/figure>\n\n\n\n

          Here is a scientific illustration depicting the dissociation of the given salts in aqueous solutions, showing their pH effects with appropriate indicator colors. Let me know if you need any modifications or further explanations!<\/p>\n","protected":false},"excerpt":{"rendered":"

          Determine whether aqueous solutions of the following salts are acidic, basic, or neutral: (a) K2CO3 (b) CaCl2 (c) KH2PO4 (d) (NH4)2CO3 Can you show work that was used to find out of the compound was acidic, basic, neutral. The Correct Answer and Explanation is : To determine whether aqueous solutions of the given salts are […]<\/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-194544","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194544","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=194544"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194544\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=194544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=194544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=194544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}