2022

Chemistry

POST UTME

Which of the following equilibria is shifted to the right as a result of an increase in pressure?

A.

20 $_3$ $_(g)$ → 30 $_2$ $_(g)$

B.

PCl $_5$ (g) + PCl $_3$ (s) + Cl $_2$ $_(g)$

C.

2NO $2$ (g) + N $_2$ O $_4$

D.

H $_2$ $_(g)$ + I2 $_(g)$ => 2HI(g)

Correct Answer:
2NO $2$ (g) + N $_2$ O $_4$

Explanation

when pressure s increased, the equilibrium position shifts so as to favour the reaction producing less gaseous moles. The reverse applies if pressure is decreased

when pressure s increased, the equilibrium position shifts so as to favour the reaction producing less gaseous moles. The reverse applies if pressure is decreased

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