Question

1.5 moles of $HCl$ is dissolved in 2 L of water. Find the strength of the solution

• A. $35.42$ g/L
• B. $12.88g/L$
• C. $27.38g/L$
• D. $17.26g/L$

Answer 1

The correct option is C $27.38g/L$

Given: 1.5 moles of $HCl$.
number of moles = $\frac{\text{given mass}}{\text{molar mass}}$,
molar mass = 36.5 $g/mol$
amount of $HCl$ = $36.5\times 1.5$ = 54.75 g
Strength = Concentration of solution expressed in g/L
$\therefore$ Strength of $HCl$ = $\frac{54.75}{2}g/L$ = 27.38 g/L