Calculate the concentration (% W/V) of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.
15.00g x (100/300) = 5g/100 = 5% w/v
.05
To calculate the concentration of the NaCl solution (% W/V), we need to determine the mass of NaCl in grams per 100 mL of solution.
Step 1: Convert the volume from milliliters (mL) to liters (L).
300.0 mL ÷ 1000 = 0.3 L
Step 2: Calculate the mass of NaCl in grams per 0.3 L of solution.
% W/V = (mass of solute ÷ volume of solution) × 100
% W/V = (15.0 g ÷ 0.3 L) × 100
Step 3: Solve the equation.
% W/V = (50 g/L) × 100 = 5% W/V
Therefore, the concentration of the NaCl solution is 5% W/V. This means that there are 5 grams of NaCl per 100 mL of solution.