The change in entropy of an ideal gas during reversible isothermal expansion is

The change in entropy of an ideal gas during a reversible isothermal expansion is

In reversible isothermal expansion of an ideal gas :

In reversible isothermal expansion of an ideal gas :

In reversible isothermal expansion of an ideal gas :

The change in entropy for 2 mol ideal gas in an isothermal reversible expansion from 10 mL to 100 mL at 27^(@)C is-

If the change in entropy of reversible isothermal expansion of 1 mol of an ideal gas is 9.135 " J mol"^(-1). K^(-1) , what will be the entropy change of the surroundings and universe ? If the above expansion of gas is allowed to occur against zero pressure, what will be the entropy change of the system and surroundings ?

To calculate the amount of work done in Joules during reversible isothermal expansion of an ideal gas, the volume must be expressed in