consider the equilibrium system SO3 = SO2 + 1/2 O2 At 400K , a 20 g of SO3 - Chemistry - Chemical and Ionic Equilibrium

Question

consider the equilibrium system SO3 <=> SO2 + 1/2 O2 At 400K
, a 20 g of SO3 exhibited decomposition of 45% at the equilibrium
pressure of 1 atm Calculate Kp

Vartika Jain · Accepted Answer

Dear Student,

SO3   ↔    SO2   +   12O2α = 45%= 0
45If 1 mol of SO3(g) is taken at the start, then at equilibrium (1-0
45) mol of SO3(g) i e  0 55 mol0
45 mol of SO2 and 0
225 mol of O2 are present
 Total no  of moles = 1
225 molpSO3 =0 551 225×1 atm pSO2 =0
451 225× 1 atmpO2 = 0 2251
225× 1 atmKp = pSO2×pO212pSO3=0 451
225×(0 2251 225)120 551 225= 0 3506 atm12

consider the equilibrium system SO3 <=> SO2 + 1/2 O2 At 400K , a 20 g of SO3 exhibited decomposition of 45% at the equilibrium pressure of 1 atm.Calculate Kp