Calculate the work done for the reversible isothermal expansion of 1 mole of an ideal gas at `27^@C`, from a volume of 10 `dm^3` to a volume of `20dm^3`

A spontaneous process is an irreversible process and may only by reserved by some external agency. a) Decrese in enthalpy is the only criterion for spontaneity. Do you agree? Why? b) Calculate the work done for the reversible isothermal expansion of 1 mole of an ideal gas at 27^oC , from a volume of 10 dm^3 to a volume of 20 dm^3.

The work done on the system when one mole of an ideal gas is compressed isothermally to a final volume of 0.01 m^(3) at constant external pressure of 5 bar is 20 kJ. What is initial volume of the gas?

Calculate the amount of work done when 1 mole of a gas expands from a volume of 1 litre to a volume of 5 litres against the constant external pressure of 1 atmosphere (1 litre atmosphere =101.3J)

Calculate the number of moles of hydrogen present in 10 dm^(3) of the gas at 25^(@)C and 1.5 atm pressure.