STANDARDChemistry-Chemical Equilibrium
STANDARD Chemistry Acid-Base Equilibria MCQ Question
Type: MCQ-numerical-Medium
What is the percentage dissociation of 0.1 M solution of acetic acid? (Kₐ = 10⁻⁵)
A
10%
B
100%
C
1%
D
0.01%
Correct Answer
Option C
Detailed Explanation
The percentage dissociation is calculated using \alpha = \sqrt{ rac{K_a}{C}}. Substituting and , we get \alpha = \sqrt{ rac{10^{-5}}{0.1}} = 10^{-2}. Therefore, the percentage dissociation is .
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