[Xeno Lunar]

Consider the reaction: 2 SO2(g) + O2(g) ---- 2 SO3(g)

Kp = 12.2

What are the value of Kp for the following reactions?

4 SO3(g) --- 4 SO2(g) + 2 O2(g)


I see that the moles had been doubled from the last equation, is there some kind of rule to calculate this thing? any sort of help is apperaited thankx

[lancenti]

2 SO₂(g) + O₂(g) -> 2 SO₃(g)

K_p = P_SO3²P_O2^-1P_SO2^-2 = 12.2

4 SO₃(g) -> 4 SO₂(g) + 2 O₂(g)

K_p' = P_SO3^-4P_O2²P_SO2⁴ = (1/K_p)² = (1/12.2)² = 0.00672 (3 s.f.)