Thermodynamics ...

Which of the following is the correct Maxwell equation?

For an ideal gas the coefficient of volumetric expansion is given by T raise to the power _______

Which among the following is the correct expression for differential change in enthalpy and internal energy?

For a liquid, the variation of saturation pressure with saturation temperature is 20.5 kPa/K. And at the saturation temperature of 315 K, the specific enthalpy is 80 kJ/kg and the specific volume is 7.9 × 10-3 m3/kg. Calculate the specific enthalpy of dry saturated vapour (in kJ/kg) if the specific volume for the dry saturated vapour is 0.02 m3/kg.

In a throttling process, a saturated liquid at 1450 kPa and 217°C is throttled to a liquid vapour mixture at 145 kPa and 294 K. The enthalpy of saturated liquid before throttling and after throttling is 820 kJ/kg and is 600 kJ/kg respectively. Calculate the dryness fraction of the liquid if enthalpy of the saturated vapour is 2550 kJ/kg.

For a closed tank containing a mixture of water and water vapour under a particular pressure and temperature. Find the value of the density of given system using the following data:

Mass of water vapour = 20 gm

Mass of water in in liquid form = 40 gm