Question

How many moles of $$KI$$ are required to produce $$0.4$$ moles of $$K_2HgI_4$$?

A
0.4
B
0.8
C
3.2
D
1.6

Solution

The correct option is B 1.6$$HgCl_{2} + 4 KI \rightarrow 2KCl + K_{2}HgI_{4}$$From the above equation, 1 mole of $$K_{2}HgI_{4}$$ requires 4 moles of $$KI$$  0.4 moles of  $$K_{2}HgI_{4}$$  requires $$0.4 \times 4 = 1.6$$ molesof  $$KI$$$$\therefore$$ To produce 0.4 moles of $$K_{2}HgI_{4}$$, 1.6 moles of $$KI$$ is required Chemistry

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