# What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

##### 1 Answer

#### Answer:

#### Explanation:

Molarity is a measure of a solution's *concentration* in terms of how many **moles of solute** it contains **per liter** of solution.

So, in essence, if you have the number of moles of solute, like you do here, and the *total volume* of the solution **expressed in liters**, you can find how many moles of solute you get *per liter*, i.e. the molarity of the solution.

Keeping in mind the fact that the moles of solute are *distributed evenly* in any given volume of the solution, you can say that because

#1 color(red)(cancel(color(black)("L"))) * "0.202 moles KCl"/(7.98color(red)(cancel(color(black)("L")))) = "0.0253 moles KCl"#

So, if your solution contains **per liter**, it follows that its molarity is equal to

#c = color(green)("0.0253 M")#

Here *molar*.