Which of the following equilibria is shifted to the right as a result of an increase in pressure?
H2(g) + I2(g) 2HI(g)
2NO2(g) N2O4(g)
PCl5(s) PCl3(s) + Cl2(g)
2O3(g) 3O2(g)
The correct answer is: B
Explanation
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