DAY 14 – DAW February

Otto and Diesel engines, Gibbs’ phase rule and chemical potential;

Questions:

Q 1. What are the conditions for the change in temperature of a van der Waals gas passing through a porous plug? Prove that the ideal gas passing through the porous plug does not show any change in temperature. [10 Marks]

Q 2. one mole of gas obeys the equation of state: $(P+\frac a {v^2})(v-b)=RT$ where $v$ is the molar volume and $a$ and $b$ are constants. show that the internal energy of the gas increases as volume increases, with the temperature remaining constant. [10 Marks]

Video Solution at 11 pm