20 mL of calcium hydroxide was consumed when it was reacted with 10 mL of unknown — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

(i) CaCOHl2 + 2HCl   CaCl2 + 2H2O Milimole M1 ×10 (2×M1)10 Milimole of HCl = (2 ×M1)10 = 0.5 × 20 2) OH ( Ca M = 0.5M (ii) with H2SO4  Ca(OH)2 + H2SO4   CaSO4 + 2H2O 0.5 ×2 (M2×10) M2 × 10 = 0.5 × 20 M2 = 1 Molarity of H2SO4 = 1 Ans. 1