Q.
pKa of lactic acid is 5. pH of 0.005 M calcium lactate solution is
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a
10.5
b
8.5
c
5.0
d
9.7
answer is B.
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Detailed Solution
0.005M calcium lactate [(Lactate) 2Ca ∴ [ Lactate ]=0.01M pH=7 pKa2+logC2=7+2.5−1=8.5
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