Question

What is the molarity of a solution which has a volume of 3 litres and contains 5.1 moles of Br2?

Answer 1

Answer:

The molarity of the solution is 1.7 $\frac{moles}{liter}$.

Explanation:

Molarity (M) or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$Molarity=\frac{moles of solute}{volume of the solute}$

Molarity is expressed in units $\frac{moles}{liter}$.

In this case, you know:

• moles of solute= 5.1
• volume= 3 L

Replacing:

$Molarity=\frac{5.1 moles}{3 L}$

Solving:

Molarity= 1.7 $\frac{moles}{liter}$

The molarity of the solution is 1.7 $\frac{moles}{liter}$.