At room temperature the following reactions proceed nearly to completion:2NO + O_2 to 2NO_2 to N_2O_4The dimer, N_2O_4solidifies at 262 K. A 250-ml flask and a 100-ml flask are separated by a stopcock. At 300 K the nitric oxide in the larger flask exerts a pressure of 1.053 atm and the smaller one contains oxygen at 0.789 atm. The gases are mixed by opening the stopcock and after the end of the reaction the flasks are cooled to 220 K. Neglecting the vapour pressure of the dimer, find out the pressure and composition of the gas remaining at 220 K. Assume the gases to behave ideally.

At room temperature the following reactions proceed nearly to completi

1.	At room temperature the following reactions proceed nearly to completion:2NO + O_2 to 2NO_2 to N_2O_4The dimer, N_2O_4solidifies at 262 K. A 250-ml flask and a 100-ml flask are separated by a stopcock. At 300 K the nitric oxide in the larger flask exerts a pressure of 1.053 atm and the smaller one contains oxygen at 0.789 atm. The gases are mixed by opening the stopcock and after the end of the reaction the flasks are cooled to 220 K. Neglecting the vapour pressure of the dimer, find out the pressure and composition of the gas remaining at 220 K. Assume the gases to behave ideally.
Answer» SOLUTION :0.221 ATM, NO- 0.0043 MOL