Thermodynamics Questions

Standard entropies of X2, Y2 and XY3 are 60, 40 and 50 JK-1 mol-1 respectively. For the reaction y2 ⇋ XY3 ; ᐃH = - 30kJ , to be at equilibrium, the temperature should be...

For complete combustion of ethanol, C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), the amount of heat produced as measured in bomb calorimeter, is 1364.47 kJ mol-1 at 25oC. Assuming ideality the enthal...

For the process H2O(I) → H2O(g) at T = 100oC and 1 atmosphere pressure, the correct choice is

For the reaction, X2O4(l) → 2XO2(g) ᐃU = 2.1 kcal, ᐃS = 20 cal K-1 at 300 K Hence, ᐃG is

Calculate change in internal energy ifᐃH = - 92.2kJ, P = 40 atm and ᐃV = - 1L.

6 mole of an ideal gas expand isothermal and reversibly from a volume of 1 liter to avolume of 10 liters at 27oC. What is the maximum work done ?

For the reaction, , graph is plotted as shown below. Identify correct statements.A. Standard free energy change for the reaction is .B. As in graph is positive, will not dissociate into at all.C. Reve...

Which of the following graphs between pressure 'P' versus volume 'V' represent the maximum work done?

Among the following, the intensive property is (properties are)

An ideal gas in a thermally insulated vessel at internal pressure = P1, volume = V1 and absolute temperature = T1 expands irreversibly against zero external pressure, as shown in the diagram. The fina...

In which of the following reaction, ᐃH > ᐃU ?

For a reaction, A ⇌ P, the plots of [A] and [P] with time at temperatures T1 and T2 are given below. If T2 > T1, the correct statement(s) is (are) (Assume ∆H⊝ and ∆S⊝a...

The above p-v diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat, extracted from the source in a single cycle is :...

A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0oC. As it does so, it absorbs 208 J of heat. The values of q and w for the proc...

The incorrect expression among the following is :-

In which of the following reactions, standard reaction entropy changes (ᐃSo) is positive and standard Gibb′s energy changes (ᐃGo) decreases sharply with increasing temperature ?...

Standard enthalpy of vaporisation ᐃvapHo for water at 100oC is 40.66 kJ mol-1. The internal energy of vaporisation of water at 100oC (in kJ mol-1) is (Assume water vapour to behave like an ideal...

Equal volumes of two monoatomic gases, A and B, at same temperature and pressure are mixed. The ratio of specific heats (Cp/Cv) of the mixture will be

The enthalpy of fusion of water is 1.435 kcal/mol. The molar entropy change for the melting of ice at 0oC

In which of the following reactions, standard reaction entropy change (ᐃSo) is positive and standardGibb′s energy change (ᐃGo) decreases sharply with increasing temperature?...