Question

Two moles of an ideal gas is expanded isothermally and reversibly from `1` liter to `10` liter at `300 K`. The enthalpy change (in `kJ`) for the process
A. `11.4 kJ`
B. `4.8 kJ`
C. `-11.4KJ`
D. zero kJ

Answer 1

Correct Answer - D
The enthalpy change at constant pressure is given as :
`Delta H = C_(P) Delta T`
for isothermal expression
`Delta T = 0`
`:. Delta H = 0`