Question

Q.8 A solution is prepared by dissolving 18.25g of NaOH in 200 ml of solution. Calculate the
molarity of the solution.
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Answer 1

Answer:

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}}molarity=molecular mass of solute×Volume of solution in litresmass of solute ...(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 MMolarity=40g/mol×0.2L18.25g=2.28M

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