Thermodynamics Questions

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...

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 ?

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

Standard enthalpy of vapourisation ᐃvapH- for water at 100oC is 40.66 kJmol-1. The internal energy ofvapourisation of water at 100oC (in kJ mol-1) is...

If the enthalpy change for the transition of liquid water to steam is 30 kJ mol-1 at 27oC, the entropy change for the process would be

For a particular reversible reaction at temperature T, ᐃH and ᐃS were found to be both +ve. If Te is the temperature at equilibrium, the reaction would be spontaneous when...

Idenify the state quantity among the following :

Identify the correct statement regarding a spontaneous process

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If Ti is the initial temperature and Tf is the final temperature, which of the following statements is correct...

(ᐃH - ᐃU) for the formation of carbon monoxide (CO) from its elements at 298 K is (R = 8.314 J K-1 mol-1)