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        <div id="content-top1">Page 6 - 10-Chem-10   Acid, Bases and Salts</div>
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    <pre style="white-space:pre-line"><code>10. Acid, Bases and Salts                                                                            eLearn.Punjab

                           All Arrhenius acids are Bronsted-Lowry acids,
                            but except OH other Bronsted-Lowry bases
                                         are not Arrhenius bases

                   Table 10.3 Conjugate acid-base pairs of common species

          Acid             Base                                             Conjugate acid     Conjugate base

        HNO3(aq)   + H2O(I)                                                 H3O+(aq)        +  NO3 (aq)
        H2SO4(aq)  + H2O(I)
         HCN(aq)   + H2O(I)                                                 H3O+(aq)        +  HSO4 (aq)
     CH3COOH(aq)   + H2O(I)
                   + NH3(aq)                                                H3O+(aq)        +  CN (aq)
          H2O(I)   + CO32-(aq)
          H2O(I)   + HCO3 (aq)                                              H3O+(aq)        + CH3COO (aq)
          HCI(I)
                                                                            NH4+(aq)        +  OH (aq)
Problem 10.1
                                                                            HCO3 (aq)       +  OH (aq)

                                                                            H2CO3(aq)       +  CI(aq)

(a) 	 What are conjugate bases of each of the following?

                                                                         3

(b) 	 Give the conjugate acids of the following:

(c) 	 Which of the following behave both as Bronsted acids and Bronsted bases?

Solution

         (a)             Conjugate base                                             (b)         Conjugate acid

     HS-                    : S2-                                               OH-                : H2O
                                                                              HCO3-               : H2CO3
    H3O+                  : H2O                                               HPO42-            : H2PO4-(aq)
   H2PO4-                : HPO42-                                             CH3N2             : CH3NH3+
   HSO4-                  : SO42-
                                                                               CO32-               CHO3-
     HF                     : F-                                            CH3COOH            : H3COOH2+

CH3COOH                : CH3COO-
[Al(H2O)6]3+       : [A1 (H2O)5OH]2+

(c) 	 Bronsted acids, as well as, bases are: H2O, HCO3 , HS

                                         6</code></pre>
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