Question

What is the osmolarity of a solution containing 2 mol of iron chloride dissolved in 1 liter of water?

A) 2 osmol/L
B) 3 osmol/L
C) 4 osmol/L
D) 5 osmol/L

Answer 1

The osmolarity of the solution containing 2 mol of iron chloride dissolved in 1 liter of water is 8 osmol/L.

Step-by-step explanation:

The osmolarity of a solution can be calculated by multiplying the number of moles of solute by the van 't Hoff factor and dividing by the volume of the solution in liters.

In this case, we have 2 moles of iron chloride in 1 liter of water. The van 't Hoff factor for iron chloride is 4, as it dissociates into 4 ions in aqueous solution.

So, the osmolarity is calculated as (2 mol) * (4) / (1 L) = 8 osmol/L.