alleryStart learning →A weak acid is 12% dissociated in 0.05 M. Its percent dissociation in 0.15 M solution is about
A12%
B4.0%
C3.0%
D6.93%
Answer & Solution
Correct answer: D. 6.93%
Using alpha1 squared x c1 = alpha2 squared x c2, alpha2 = 0.12 x square root of (0.05/0.15) = 0.0693, i.e. 6.93%.
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