AIPMT PRELIMS2006Chemistry-Equilibrium
AIPMT PRELIMS 2006 Chemistry Ionic Equilibrium MCQ Question
Type: MCQ-numerical-Medium-Class 11
The hydrogen ion concentration of a 10⁻⁸ M HCl aqueous solution at 298 K (Kw = 10⁻¹⁴) is:
A
1.0525 × 10⁻⁶ M
B
1.0525 × 10⁻⁷ M
C
8.525 × 10⁻⁸ M
D
1.0525 × 10⁻⁸ M
Correct Answer
Option B
Detailed Explanation
In very dilute solutions, the contribution of H⁺ from water must be considered. Total [H⁺] = 10⁻⁸ + √(10⁻¹⁴) = 1.0525 × 10⁻⁷ M.
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