For the reaction H2(g)+ I2(g) ⇌ 2HI(g),the equilibrium constant changes with:
Correct answer: D. Temperature
- A. Total pressure
- B. Catalyst
- C. Concentrations of H2 and l2
- D. Temperature
Explanation
The equilibrium constant K changes with temperature.According to the Van't Hoff equation, if the reaction is exothermic or endothermic, increasing or decreasing temperature shifts the equilibrium and changes K
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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