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* \text{Volume of solution (in L)}}`

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

`\text{Molarity}=(116g)/(58g/mole* 2L)=1mole/L=1M`

Therefore, the molarity of KF solution is, 1 M