Do the number of moles of reaction products increase, decrease or remain or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? PCl_5(g) iff PCl_3(g)+Cl_2(g)

Do the number of moles of reaction products increase, decrease or rema

1.	Do the number of moles of reaction products increase, decrease or remain or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? PCl_5(g) iff PCl_3(g)+Cl_2(g)
Answer» Solution :Applying Le Chatelier.s PRINCIPAL, as pressure DECREASES the SYSTEM will favour the forward direction where there is increase in the NUMBER of moles of gaseous products. i.e., Number of moles of reaction products increase.