While a 1.00 L flask containing 1.500 atm of gas A is fixed with a 1.00 L flask containing 0.750 atm of gas B, also the stopcock between the flasks is opened, also the gases are allowed to mix thoroughly, the subsequent reaction proceeds at constant temperature. Explain what is the resulting total pressure of gases in now-joined flasks subsequent to the reaction proceeds to completion?
6A (g) + 2B(g) 2A3B(g)