An equilibrium mixture of SO 2, O 2, and SO 3 gases at 1500 K is determined to consist of 0.344 mol/L SO 2, 0.172 mol/L O 2, and 0.56 mol/L SO 3. What is the equilibrium constant for the system at this temperature The balanced equation for this reaction is?

Ke = 15.407

balanced eq: 2SO2 (g) + O2 (g) → 2SO3 (g)

Explanation:

balanced equation:

2SO2 (g) + O2 (g) → 2SO3 (g)

equilibrium constant (Ke):

∴ Ke = [SO3]² / [SO2]²[O2]

equilibrium concentration at 1500 K:

∴ [SO3] = 0.56 mol/L

∴ [SO2] = 0.344 mol/L

∴ [O2] = 0.172 mol/L

⇒ Ke = (0.56) ² / (0.344) ² (0.172)

⇒ Ke = 15.407