Which of the following undergoes aqueous decomposition?

Question

$KNO_3$ , $NaCl$ , $K_2SO_4$ , $CH_3COONa$

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Answer 1 · 2018-05-03T07:28:24

Well all of these salts are chemically dissociated in aqueous solution....

i.e. $KNO_3(s) stackrel(H_2O)rightleftharpoons K^+ + NO_3^(-)$

Acetate ion undergoes association in an acid-base reaction, but the given equilibrium LIES to the left as we face the page:

$H_3C-CO_2^(-) + H_2O(l) rightleftharpoons H_3C-CO_2H(aq) +HO^-$