17) The reaction system POCl3(g) =± POCI(L) + Cl2(g) is at equilibrium. Which of

Question

17) The reaction system POCl3(g) =± POCI(L) + Cl2(g) is at equilibrium. Which of the following statements describes tne behavior of the system ifPOCI is added to the container? The B) The forward reaction will proceed to establish equilibrium. partial pressure of chlorine remains steady while the partial pressures of Cl3 and POCI increase. C) The reverse reaction will proceed to establish equilibrium. D) T he partial pressure of chlorine will increase while the partial pressure of POCI decreases. E) The partial pressures of POClh and POCI will remain steady while the partial pressure of chlorine increases. E/FALSE (2 pts/question) 18) A transition state is a species (or state) corresponding to an energy maximum on a rea diagram. rue B) False 19) The rate of a reaction is determined by the rate of the fastest step in the mechanism. A) True alse 20) In the lock and key model of enzyme action, the active site on the enzyme provides exact fit for the substrate. A) True False d catalyst for a reaction will speed up the forward reaction and slow down the

Explanation / Answer

17)

C) The reverse reaction proceeds to estabilish equillibrium

According to le chatelier principle, if a stress applied like change in concentration, tempereature, pressure or volume to equillibrium, the equillibrium is readjust itself to compensate the stress

when POCl is added to the equillibrium, reverse reaction will take place, so that excess added POCl consumed.

18)

A) True

19)

B) False

20)

A) True

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