0.5 moles of an ideal gas at 20 degrees * C expand isothermally against a constant pressure of 2 atm from 1 litre to 5 litre, what is the entropy change of the surroundings?

0.5 moles of an ideal gas at 20 degrees * C expand isothermally agains

1.	0.5 moles of an ideal gas at 20 degrees * C expand isothermally against a constant pressure of 2 atm from 1 litre to 5 litre, what is the entropy change of the surroundings?
Answer» TION:General FORMULA of entrophy changes,△S=C v LN( T 1 T 2 )+Rln( V 1 V 2 )given {isothermal process T 1 =T 2 }P v =nRTV F = PnRT = 11×0.082×300 V f =24.6L△S=R ln (24.6)