Question

How many moles of KI are required to produce 0.4 moles of K₂HgI₄ ?

(a) 0.4

(b) 0.8

(c) 3.2

(d) 1.6

Answer 1

Correct option is (b) 0.8

2KI + HgI₂  → K₂HgI₄

Moles of KI required to produce 0-4 moles of K₂HgI₄ = 2 x 0.4 = 0.8