Question

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g HCl into mol using molar mass)

Answer 1

Answer: The volume of solution is 0.0459 L

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution

$Molarity=\frac{n}{V_s}$

where,

n = moles of solute

$V_s$ = volume of solution in L

moles of HCl (solute) = $\frac{\text {given mass}}{\text {Molar mass}}=\frac{2.43g}{36.5g/mol}=0.0666$

Now put all the given values in the formula of molality, we get

$1.45M=\frac{0.0666}{V_s}$

$V_s=\frac{0.0666}{1.45}=0.0459$

Therefore, the volume of solution is 0.0459 L