Find the percent by mass of sodium chloride in a 1.20 m nacl solution. the density of the solution is 1.06 g/ml

The mass percent of sodium chloride in solution is 6.616 %

Explanation:

Molarity is defined as the number of moles present in one liter of solution.

Mathematically,

We are given:

Molarity of NaCl solution = 1.20 M

This means that 1.20 moles of NaCl is present in 1 L or 1000 mL of solution

Molar mass of NaCl = 58.44 g/mol

Moles of NaCl = 1.20 moles

Putting values in above equation, we get:

Density of solution = 1.06 g/mL

Volume of solution = 1000 mL

Putting values in above equation, we get:

Mass of solution = 1060 g

Mass of sodium chloride = 70.13 g

Putting values in above equation, we get:

Hence, the mass percent of sodium chloride in solution is 6.616 %