Q.

PKa of acetic acid is 4.74. The concentration of CH3COONa is 0.01M. The pH of CH3COONa solution is

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a

10.37

b

8.37

c

7.0

d

4.37

answer is B.

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Detailed Solution

PH of a salt of weak acid and strong base is given as PH=12PKw+PKa+logC0⇒PH=12[14+4.74-2]=8.37
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