Question #c5cb2

1 Answer
P dilip_k
Apr 16, 2017

By the problem the following gaseous reaction is occuring in closed, rigid vessel at constant temperature.

#W(g)+X(g)->Y(g)+Z(g)#

The stoichiometric ratio of number of moles of reactants and prducts is

#W(g):X(g):Y(g):Z(g)=1:1:1:1#

The volume and temperature remaining constant the partial pressures of the component gases are proportional to their number of moles.

The initial partial pressures of #W(g) and X(g)# are 1.2 atm and 1.6 atm respectively.
And the initial partial pressures of #Y(g) and Z(g)# are 0 atm.

If the partial pressure of #W(g)# is decreased to 1atm then the 0.2atm decrease is due to its taking part in the reaction.
So the decrease in pressure of #X(g)# will also be 0.2 atm.

But pressures of each of #Y(g) and Z(g) # will be inreased to 0.2atm as the interacting mole ratio is #1:1:1:1#

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