Ammonia gas can be synthesized by the following catalyzed reaction, performed in

Question

Ammonia gas can be synthesized by the following catalyzed reaction, performed in a closed container.

Indicate the direction in which the equilibrium position would shift as a consequence of each of the following actions:

Left Right No Effect: removing N2 from the mixture
Left Right No Effect: decreasing the size of the reaction container
Left Right No Effect: heating the equilibrium mixture
Left Right No Effect: increasing the pressure in the container by adding an inert gas

2) The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine.

Cl2 ? 2Cl (fast, reversible)
Cl + CHCl3 ? HCl + CCl3 (slow)
Cl + CCl3 ? CCl4 (fast)

What rate law does this mechanism predict? (Choose from the list below and enter your answers in alphabetical order, e.g. ABC ).

A)k G) [Cl2]1/2 M) [CHCl3]2 B) [CHCl3] H) [Cl]1/2 N) [CCl3]2 C) [CCl3] I) [CHCl3]1/2 O) [HCl]2 D) [HCl] J) [CCl3]1/2 P) [Cl2]2 E) [Cl2] K) [HCl]1/2 F) [Cl] L) [Cl]2

Explanation / Answer

Ans 1 :

According to the Le chatelier's principle , whenever the reaction at equillibrium is subjected to a change in reaction conditions , the reaction moves in a direction , where the equillibrium can be estabilished again.

So here :

removing N2 from the mixture : left

decreasing the size of reaction container : right

heating the equillibrium mixture : left

increasing the pressure in the container by adding an inert gas : right

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