Chemistry! =S?

[potassium]

Colorless N2O4(g) decomposes on warming to give brown NO2(g). 0.10 mol of N2O4(g) is placed in a 1.0 dm-3 bulb and sealed and the bulb is heated too 100 degrees celcius. When equilibrium is established, 0.035 mol of N2O4 is found to be present.


1) a) Predict what may be observed when the bulb is heated to 200 degrees celcius. [1 mark]

b) Give a reasoned argument for your answer. [3 marks]



2) a) Predict what may be observed when the pressure on the system is increased from 1 atmosphere (atm) to 2 atm. [1 mark]

b) Give a reasoned argument for your answer. [3 marks]



3) a) 0.40 mol of N2O4 is introduced into the system at 100 degrees celcius. What is the effect on the equilibrium constant? and Explain.