Question

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 1

Explanation:

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

=nRT

V

f

=

P

nRT

=

1

1×0.082×300

V

f

=24.6L

△S=R ln (24.6)