Question

Molecule X dissociates into 4 ions when dissolved in an aqueous solution. If we make a solution of molecule X with a molarity of 0.16 M, what is the osmolarity of the solution

Answer 1

Answer:

Given that,

Molarity of molecule X = 0.16M

Molarity = no.of moles / volume of solution in Litres

So, rearranging the equation for no.of moles = Molarity * volume of solution in Litres

substituting the values,

no.of moles = 0.16M* 1 L = 0.16 moles

osmolarity is the no.of osmoles per litre of a solution. osmolarity refers to concentration in terms of moles per litre of the solution.

since molecule X dissociates in to 4 ions when dissolved in aqueous solution ,

1 mole of X forms 4 mol of paticles

so, 1 mole of X = 4 osmoles

Therefor, 0.16 moles of X = 0.16 * 4 = 0.64 osmoles

osmolarity = osmoles / L

= 0.64 / 1L = 0.64 osmoles / L

Explanation: