Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
Mole Concept and Stoichiometry/
Question 600058
JEE Chemistry · Hard

Mole Concept and Stoichiometry: Concentration Calculations MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Concentration CalculationsHardQuestion 600058

Question

How many grams of water must be added to 500 mL of 12 M HCl to make it 2 M? (Density of final solution ≈ 1 g/mL)
  1. A
    2.5 L total, add 2 L
  2. B
    3 L total, add 2.5 L
    Correct
  3. C
    1 L total, add 0.5 L
  4. D
    0.5 L of water

Correct answer

3 L total, add 2.5 L

Explanation

M₁V₁ = M₂V₂ → 12 × 0.5 = 2 × V₂ → V₂ = 3 L. Volume to add = 3 − 0.5 = 2.5 L.

Review Mole Concept and Stoichiometry notesStart timed chapter practice