Q.

The equilibrium constant of the reactionSO2(g) + 1/2 O2(g) ⇋ SO3(g) is 4 × 10-3  atm-1/2. The equilibrium constant of the reaction2SO3(g)  ⇋ 2SO2(g) + O3(g) would be

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a

250 atm

b

4 × 103  atm

c

0.25 × 104  atm

d

6.25 × 104  atm

answer is D.

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Detailed Solution

SO2(g) +12 O2(g) → SO3(g)       KP=4 × 10-3SO3  → SO2(g) + 12O2(g)          K'p=1Kp                                                           K'p=14 × 10-3 2SO3  → 2SO2 + O2(g) K''p=K''p2 = 14 × 10-32 = 10004 =6250=625 × 102=6.25 × 104 atm
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The equilibrium constant of the reactionSO2(g) + 1/2 O2(g) ⇋ SO3(g) is 4 × 10-3  atm-1/2. The equilibrium constant of the reaction2SO3(g)  ⇋ 2SO2(g) + O3(g) would be