Question

What is the molarity of a KF solution that contains 116 grams of KF in 2 L of solution?

Answer 1

Answer : The molarity of KF solution is, 1 M

Explanation : Given,

Mass of $KF$ = 116 g

Volume of solution = 2 L

Molar mass of $KF$ = 58 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

$\text{Molarity}=\frac{\text{Mass of }KF}{\text{Molar mass of }KF\times \text{Volume of solution (in L)}}$

Now put all the given values in this formula, we get:

$\text{Molarity}=\frac{116g}{58g/mole\times 2L}=1mole/L=1M$

Therefore, the molarity of KF solution is, 1 M