Density of sulphuric acid solution is 1.2g/mL and it is 40 %H2SO4 by weight. Determine molarity of this solution.

Question

Density of sulphuric acid solution is 1.2g/mL and it is 40 %H2SO4 by weight. Determine molarity of this solution. (A) 4.9M (B) 9.8M (C) 2.25M (D) 0.1M

Tardigrade Admin · Accepted Answer

Consider one litre solution Weight of solution =1200g Weight of solute =1200× 0.4=480g Moles of solute =(480/98)=4.898=4.9

Q. Density of sulphuric acid solution is $1.2 g / m L$ and it is $40% H_{2} S O_{4}$ by weight. Determine molarity of this solution.

$4.9 M$

$9.8 M$

$2.25 M$

$0.1 M$

Consider one litre solution
Weight of solution $= 1200 g$
Weight of solute $= 1200 \times 0.4 = 480 g$
Moles of solute $= \frac{480}{98} = 4.898 = 4.9$

Q. Density of sulphuric acid solution is 1.2g/mL and it is 40%H2​SO4​ by weight. Determine molarity of this solution.

4.9M

9.8M

2.25M

0.1M