Question

A solution is prepared by dissolving 18.25 g of NaOH in distilled water to give 200 ml of

solution. Calculate the molarity of the solution.

Answer 1

Answer:The molarity of the solution is 2.28 M.

Explanation:

Molarity of the solution is given by:

$molarity=\frac{\text{mass of solute}}{\text{molecular mass of solute}\times \text{Volume of solution in litres}}$...(1)

Mass of NaOH = 18.25 g

Volume of the solution: 200 mL =0.2 L (1L=1000mL)

Molecular mass of NaOH = 40 g/mol

Molarity of the solution will be calculated using above expression (1):

$Molarity=\frac{18.25 g}{40 g/mol\times 0.2 L}=2.28 M$

Answer 2

Answer:

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