Question

1.00 mol of N2O4 and 1.00 mol of NO2 are placed in an 800 mL container. Calculate the initial concentrations of each gas.
N2O4= 1.25 mol/L
NO2=1.25 mol/L
When equilibrium is reached, the concentration of NO2 increases by 0.50mol/L. Calculate the equilibrium NO2 and N2O4
If I set up an ice table
N2O4 2NO2
initial 1.25 mol/L 1.25mol/L
change -0.25 0.50
equil 1.0 mol/L 1.75mol/L
I am sure this is not right because I should have double the 2NO2. If you could point out where I have gone astray I would appreciate it.

Answer 1

I don't see that you have gone astray. I don't see anything wrong.