Q. The density $\left( in\ g\ {mL}^{- 1} \right)$ of a 3.60 M sulphuric acid solution that is 29% $H_{2}SO_{4}\ (molar\ mass = 98\ g\ {mol}^{- 1}\ )$ by mass will be
A) 1.64
B) 1.88
C) 1.22
D) 1.45
Explanation
(c)
Molarity = $\frac{10\ \times \ density\ \times \ wt.of\ solute}{mol.wt.of\ the\ solute}$
density = $\frac{3.60\ \times \ 98}{10\ \times \ 29}$ = 1.21
% by weight of solute $\times \$density
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.