Question

Complete reaction of 2.0 g of calcium (at. wt. = 40) with excess HCl produces 1.125 L of H₂ gas. Complete reaction of the same quantity of another metal M with excess HCl produces 1.85 L of H₂ gas under identical conditions. The equivalent weight of M’ is closest to

(a) 23

(b) 9

(c) 7

(d) 12

Answer 1

Answer is : (d) 12

Let the equivalent weight of metal M = x

= 12.16 ≈ 12