Question

How many grams of NaCl are dissolved in 500.0 mL of a 0.050 M solution of NaCl?​

Answer 1

Answer: 1.461 g of NaCl is dissolved in the solution.

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L.

The formula used to calculate molarity:

$\text{Molarity of solution}=\frac{\text{Given mass of solute}\times 1000}{\text{Given mass of solute}\times \text{Volume of solution (mL)}}$       .....(1)

Given values:

Molarity of solution = 0.050 M

Molar mass of NaCl = 58.44 g/mol

Volume of solution = 500.0 mL

Putting values in equation 1, we get:

$0.050=\frac{\text{Given mass of NaCl}\times 1000}{58.44\times 500}\\\\\text{Given mass of NaCl}=\frac{0.050\times 58.44\times 500}{1000}\\\\\text{Given mass of NaCl}=1.461g$

Hence, 1.461 g of NaCl is dissolved in the solution.