AIPMT PRELIMS2007Chemistry-Equilibrium
AIPMT PRELIMS 2007 Chemistry Acid-Base Equilibria MCQ Question
Type: MCQ-numerical-Medium-Class 11
A weak acid, HA, has a Kₐ of 1.00 × 10⁻⁵. If 0.100 mole of this acid dissolved in one litre of water, the percentage of acid dissociated at equilibrium is closest to
A
1.00%
B
99.9%
C
0.100%
D
99.0%
Correct Answer
Option A
Detailed Explanation
Using the formula for percent dissociation, % dissociation = (√(Kₐ/C₀)) × 100. Substituting the given values, the percentage dissociation is approximately 1.00%.
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