Consider the chemical system 2SO2(g)+O2(g)⇌ 2SO3(g)

Question

Consider the chemical system 2SO2(g)+O2(g)⇌ 2SO3(g)

The initial concentrations for this system were:

[SO2] = 0.40 mol/L

[O2] = 1.6 mol/L

[SO3] = 29.7 mol/L

The equilibrium concentration of SO2(g)was 1.2 mol/L. Determine the value of the equilibrium constant, K.

a)145

b)1.45

c)29

d)2.9

e)none of these

Answer 1

2SO₂(g) + O₂(g) <--> 2SO₃ Set up an ICE table...

0.40..........1.6..............29.7.......Initial.....

+2x...........+x..............-2x...........Change...

1.2...........2.0.............28.9.........Equilibrium

Keq = [SO₃]² / [SO₂]²[O₂] = (28.9)² / (1.2)²(2.0)

Keq = 290 (answer doesn't match any of the choices. Please check my math). Otherwise, the answer is (e) none of these