Solution:

Le Chatelier's principle says that for an exothermic reaction decrease in temperature favours the forward reaction and for a reaction if $$\Delta n < 0$$   the increase in pressure favours the forward reaction and for a reaction if $$\Delta n > 0$$   the increase in pressure favours the backward reaction. Since the given reaction is having $$\Delta n < 0$$   increase in pressure favours the forward reaction.

Solution:

The heat capacities of ideal gas state is dependent only on temperature and usual relationship is given as : $${C_V} = a + bT + C{T^2} + ...$$

Solution:

The given are opposite to the requirements of an ideal liquid refrigerants.
The ideal liquid refrigerant should have a sub atmospheric vapor pressure at the temperature in refrigerator coils and also should have high vapor pressure at the condenser temperature.

Solution:

Assuming ideal gas behavior the isothermal work done is given as :
\[\begin{array}{l} W = nRTln\frac{{{P_1}}}{{{P_2}}}\\ W = 1 * 8.321 * 2079\\ {\rm{So}},W = 10379,{\rm{nearly \, equal \, to }}\,W = 10373 \end{array}\]

Solution:

Dry ice is called as solid carbon dioxide. It will be below its triple point so on heating it directly gives off carbon dioxide gas.

Solution:

The main reason behind use of the reduced properties is it converges the different plots for different gases in to one gas since different type of gases having same reduced properties behave similarly.