Question

question 16 (1 point) find the percent concentration (m/v) when 14.2 g of potassium chloride, kcl is dissolved in 450 ml of solution (assume that the volume remains the same when the solute is added). 3.16 % 14.2 % 450% none of the above

Explanation:

Step1: Recall percent - volume formula

Percent - volume ($m/V$) is calculated as $\text{Percent }(m/V)=\frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}}\times100\%$.

Step2: Substitute given values

We are given that the mass of potassium chloride ($KCl$) solute, $m = 14.2$ g and the volume of the solution, $V=450$ mL.
Using the formula $\text{Percent }(m/V)=\frac{14.2}{450}\times 100\%$.
First, calculate $\frac{14.2}{450}\approx0.0316$.
Then, $0.0316\times100\% = 3.16\%$.

Answer:

3.16%