question_answer

The decomposition reaction \[PC{{l}_{5}}(g)\rightleftharpoons PC{{l}_{3}}(g)+C{{l}_{2}}(g)\] has \[{{K}_{c}}=0.245\text{M}\] at \[\text{30}{{\text{0}}^{o}}C\]. What happens in a container which contains the three gases each at a concentration of 0.3 M?   

A) the concentration of \[C{{l}_{2}}(g)\] and \[PC{{l}_{5}}(g)\] increases and that of \[PC{{l}_{3}}(g)\] decreases

B) the concentration of \[PC{{l}_{3}}(g)\] and \[C{{l}_{2}}(g)\] increases and that of \[PC{{l}_{5}}(g)\] decreases

C) the concentration of \[PC{{l}_{3}}(g)\] and \[PC{{l}_{5}}(g)\] increases and that of \[C{{l}_{2}}(g)\] decreases   

D) the concentration of \[PC{{l}_{5}}(g)\] increases and those of \[PC{{l}_{3}}(g)\] and decreases \[C{{l}_{2}}(g)\]