Question

How many liters would you need to make a 0.7 M solution if you have 3.34 mol of Potassium
Chloride?

Answer 1

The volume of Potassium chloride solution is 4.8 L.

Explanation:

Molarity is found by dividing the number of moles of the given substance by its volume in litres, and so the unit of molarity is mol/L.

Here number of moles is given as 3.34 mol

Molarity = 0.7 M

Volume = ? L

Molarity = $\frac{moles}{Volume (L) }$

To find the volume we have to rearrange the equation as,

Volume (L) = $\frac{moles}{molarity}$

Now, we have to plug in the values as,

Volume (L) = $\frac{3.34 mol}{0.7 mol/L}$

                  = 4.77 ≈ 4.8 L

So the volume of Potassium chloride solution is 4.8 L.