Q. Concentrated aqueous sulphuric acid is 98% H₂SO₄ by mass and has a density of 1.80 g mL⁻¹. Volume of acid required to make one litre of 0.1 M H₂SO₄ solution is
A) 16.65 mL
B) 22.20 mL
C) 5.55 mL
D) 11.10 mL
Explanation
[Solution from source] Molarity of the concentrated acid = (98/98) mol per 100 g × 1.80 g/mL × 1000/100 = 18.0 M. V = (0.1 × 1000)/18.0 = 5.55 mL. 11.10 mL would result from treating the acid as 9 M. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.