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Consider the following chemical equilibrium of the gas phase reaction at a constant temperature: A(g) B(g) + C(g) If p being the total pressure, K p is the pressure equilibrium constant and α is the degree of dissociation, then which of the following is true at equilibrium?

1. If K p value is extremely high compared to p, α becomes much less than unity
2. When p increases α increases
3. If p value is extremely high compared to K p , α ≈ 1
4. When p increases α decreases

Correct answer: When p increases α decreases

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