2 moles of an ideal gas A is taken in an adiabatic container fitted with a movable frictionless adiabatic piston always operation at 1 atm. The gas A gets converted to gas B as per the reaction :
`3A(g)rarr2B(g)," "DeltaH=-kJ//"mole"`
If `75%` of `A` associates under the given conditions and initial temperature of teh vessel was `300` K, then calculate the final temperature of the vessel.
[Given : `C_(p,A(g)` `=20 J//K "mole"`
`C_(p,B(g)` `=30J//K"mole"`]

Answer

675