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STANDARD Chemistry Molarity MCQ Question

Type: MCQ-numerical-Medium-Class 12

What will be the molarity of a solution, which contains 5.85 g of NaCl₍ₛ₎ per 500 mL?

A

4 mol L⁻¹

B

20 mol L⁻¹

C

0.2 mol L⁻¹

D

2 mol L⁻¹

Correct Answer

Option C

Detailed Explanation

Molarity is calculated using the formula: M=No. of moles of soluteVolume of solution (in L)M = \frac{\text{No. of moles of solute}}{\text{Volume of solution (in L)}}. Here, M=5.85×100058.5×500=0.2 mol L−1M = \frac{5.85 \times 1000}{58.5 \times 500} = 0.2 \text{ mol L}^{-1}.

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