Question

What is the molarity of a solution containing 0.30 moles of FeCI3, dissolved in 150 ml of water

Answer 1

2M

Step-by-step explanation:

Given parameters:

Number of moles of FeCl₃ = 0.3 moles

Volume of water = 150mL

Unknown:

Molarity of solution = ?

Solution:

The molarity of a solution is the number of moles of solutes in a given solution. It is one of the ways of expressing concentration. The unit is always M i.e mol/dm³.

Molarity =
`(number of moles )/(volume)`

Express the volume in dm³;

150mL gives 0.15dm³

Molarity =
`(0.3)/(0.15)`

= 2M