question_answer

The exothermic formation of \[Cl{{F}_{3}}\] is represented by the equation \[C{{l}_{2}}(g)+3{{F}_{2}}(g)2Cl{{F}_{3}}(g);\] \[\Delta {{H}_{r}}=-329kJ\] Which of the following will increase the quantity of\[Cl{{F}_{3}}\] in an equilibrium mixture of \[C{{l}_{2}},{{F}_{2}}\]and\[Cl{{F}_{3}}\]?     AIEEE  Solved  Paper-2005

A) Adding\[{{F}_{2}}\]

B) Increasing the volume of the container

C) Removing\[C{{l}_{2}}\]

D) Increasing the temperature

Correct Answer: A

Solution :

Reaction is exothermic. By Le-Chatelier principle, a reaction is spontaneous in forward side (in the direction of formation of more \[Cl{{F}_{3}}\]) ifis added and temperature is lowered.