mixture of SO3, SO2 and O2 gases is maintained at equilibrium in 10 litre flask at a temp in which - Chemistry - Chemical and Ionic Equilibrium

Question

mixture of SO3, SO2 and O2 gases is maintained at equilibrium in 10
litre flask at a temp in which Kc for the reaction 2SO2 + O2 gives
2SO3 Kc= 100 at equilibrium-
1 if no of moles of SO3 and SO2 in flask are same then how many
moles of O2 are present
2 no of moles of SO3 is twice of SO2, then how many moles of O2 are
present

Raveena Sharma · Accepted Answer

1 We know,at equilibrium ,

Kc = [SO3]2[SO2]2[O2] = 100
As moles of SO2 is equal to that of SO3 ,
[SO2] = [SO3]
[O2] =
1100moles of SO3moles of SO2 = 2We again have,  Kc = [SO3]2[SO2]2 [O2] = 100  (moles of SO3moles of SO2)2(10moles of O2) = 100    22 × 10moles of O2 = 100   mole of O2 = 0
4
Mole of O210 = 1100 (vol = 10 L)   Mole of O2 = 0
1
2 Further,if moles of SO3 are twice that of
SO2,