Question

Calculate the molar concentration of a solution containing

37.1 grams of NaCl in 0.850 liters of water. The molar
mass of NaCl is 58.44 g/mol.

Answer 1

Molarity = 0.74 M

Step-by-step explanation:

Given data:

Molar concentration of solution = ?

Mass of NaCl = 37.1 g

Volume of water = 0.850 L

Molar mass of NaCl = 58.44 g/mol

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of NaCl:

Number of moles = mass/ molar mass

Number of moles = 37.1 g /58.44 g/mol

Number of moles = 0.63 mol

Molarity = 0.63 mol / 0.850 L

Molarity = 0.74 M