• # question_answer The molarity of a solution containing 5 g of $NaOH$ in 250 ml solution A)  0.5                             B)  1.0                 C)       1.3                 D)       4.0

Correct Answer: A

Solution :

As the molarity of solution $=\frac{\text{Weight}\,\text{of}\,\text{solute}}{\text{Molecular weight}\,\text{of solute }\!\!\times\!\!\text{ Volume of solution}}$ $=\frac{5\times 1000}{40\times 250}$ $=0.5$ Hence, the correct option is (a).

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