Question

What is the molarity of $H_{2}S{O}_4$ solution that has a density $1.84$ $g/cc$ at $35^{\circ }C$ and contains $98\%$ by weight?

• A. $4.18M$
• B. $8.14M$
• C. $18.4M$
• D. $18M$

Answer 1

Answer: (C)

Molarity $=\frac{(\%w/w)\times \text{density}\times 10}{\text{Molar mass of solute}}$
$=\frac{98\times 1.84\times 10}{98}$
$=18.4M$