Equilibrium - Result Question 100

####104. The compound whose aqueous solution has the highest pH is

[1988]

(a) NaCl

(b) NaHCO3

(c) Na2CO3

(d) NH4Cl

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Solution:

  1. (c) NaCl is a salt of strong acid and strong base hence its aqueous solution will be neutral i.e. pH=7.NaHCO3 is an acidic salt hence pH< 7. Na2CO3 is a salt of weak acid and strong base. Hence its aqueous solution will be strongly basic i.e. pH>7.

NH4Cl is salt of weak base and strong acid, hence its aqueous solution will be strongly acidic i.e. pH<7.



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