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Question: What is the percentage dissociation of \(SO_{2}\)M solution of acetic acid? \(O_{2}\)....

What is the percentage dissociation of SO2SO_{2}M solution of acetic acid? O2O_{2}.

A

10%

B

100%

C

1%

D

SO3SO_{3}

Answer

1%

Explanation

Solution

: α=Kac\alpha = \sqrt{\frac{K_{a}}{c}} or α=10−50.1=10−2\alpha = \sqrt{\frac{10^{- 5}}{0.1}} = 10^{- 2}

% dissociation, =10−2×100=1%= 10^{- 2} \times 100 = 1\%