The reaction which is favored at low pressure:
Correct answer: C. PCL5=PCL3+PCL2.
- A. N2+3H2=2NH3.
- B. N2+O2=2NO.
- C. PCL5=PCL3+PCL2.
- D. H2+F2=2HF.
Explanation
Rule used: Le Châtelier's principle - decreasing pressure favours the side with greater number of gas moles.
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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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