Question

A piston filled with 0.04 mole of an ideal gas expands reversibly from 50 ml to 375 ml at the constant temperature of 37 degree centigrade as it does so it absorbs 208 joules of heat the values of q and w for the process will be if r is equal to 8.314 joule per mole per kelvin ln 7.5 is equal to 2.01

Answer 1

For isothermal process, ? U = 0

Process is isothermal reversible expansion, hence dE =0

U = 0.

So, Using 1stlaw of thermodynamics

q = -W

or

w = -q = -208 J