NEET2013Chemistry-Physical Chemistry
NEET 2013 Chemistry Solubility Product MCQ Question
Type: MCQ-numerical-Hard-Class 11
The values of Ksp of CaCO₃ and CaC₂O₄ are 4.7 × 10⁻⁹ and 1.3 × 10⁻⁹ respectively at 25°C. If the mixture of these two is washed with water, what is the concentration of Ca²⁺ ions in water?
A
5.831 × 10⁻⁵ M
B
6.856 × 10⁻⁵ M
C
3.606 × 10⁻⁵ M
D
7.746 × 10⁻⁵ M
Correct Answer
Option C
Detailed Explanation
The concentration of Ca²⁺ ions is determined by the solubility product (Ksp) of the less soluble salt, CaC₂O₄, which is 1.3 × 10⁻⁹.
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