Question

If 32.3 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass?

Answer 1

Answer:

The concentration of the solution in percent by mass is 14.3%

Explanation:

Given:

Mass of KCl (solute) = 32.3 g

Mass of water (solvent) = 192 g

To determine:

Concentration of solution in % mass i,e. %(w/w)

Formula:

%w/w$= \frac{Mass\ of\ solute}{Total\ mass\ of\ solution } *100$

Total mass of solution = solute + solvent =  32.3 + 192 = 224.3 g

%w/w = $\frac{32}{224.3} *100 = 14.3%$

Answer 2

The concentration is 0.168 g/ml