The molarity of a solution containing 5.85 g of NaCl(s) per 500 mL of solution is -

1. 4 mol L–1

2. 20 mol L–1

3. 0.2 mol L–1

4. 2 mol L–1

Hint: Molarity=weight×1000molecular weight×volume (mL)
Explanation:
Step:1

Molarity (M) determines the number of moles of solute per liter of solution which is denoted as moles/Liter and is amongst the most common units that are used for measuring the concentration of a solution.

Molarity = no. of moles of solute /volume of solution in liters

Step 2:
Since, Molarity (M) is calculated by the following equation is as follows:
Molarity=weight×1000molecular weight×volume (mL)

=5.85×100058.5×500=0.2 mol L-1