Question

what is the molarity of a solutoin which contains 38.5 g of sodium chloride disolved in 325 ml solution ?

Answer 1

Molarity = 2.02 M

Step-by-step explanation:

Given data:

Molarity of solution = ?

Mass of sodium chloride = 38.5 g

Volume of solution = 325 mL (0.325 L)

Solution:

Number of moles = mass/molar mass

Number of moles = 38.5 g/ 58.44 g/mol

Number of moles = 0.658 mol

Molarity:

Molarity = number of moles / volume of solution in L

Molarity = 0.658 mol /0.325 L

Molarity = 2.02 M