A chemist adds 4.00mol no2 to a container with a volume of 2dm3. The container is sealed, heated to a constant temp and allowed to reach equilibrium.
the equilibrium mixture contains 3.2mol no2. Calculate Kc under these conditions.
I understand everything up to the point where reacting ratio is 2:1 and that concentration of no2 is 1.6mol dm3. So I thought that the conc. of N2O4 would be 0.8, but markscheme says its 0.2. Why is this??