Thermodynamics ...

Direction (Q. Nos. 1-9) This section contains 9 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. The difference between Δ_rH° and Δ_rE° (in kcal) for the reaction

at 298 K in kcal is

The Δ_rH° for CO₂(g), CO(g) , and H₂O(g) are - 393.5°, - 110.5 and - 241.8 kJ mol^-1, respectively. Thus, Δ_rH° for the reaction (in kJ)

[IITJEE 2000]

Enthalpies of formation of CO(g) , CO₂ (g) , N₂O (g) and N₂O₄ (g) are -110, - 393, 81 and 9.7 kJ mol^-1. Thus, Δ_rU for the reaction at 298 K is,

Given

Q. Thus, heat of formation of CH₃OH(/)is

Hot carbon reacts with steam to produce an equimolar mixture of CO(g)and H₂(g) known as water gas

Q. 
Energy released , if water gas is used as fuel is

For a gaseous phase reaction

When equilibrium is set up, K = 0.33
Energy involved (in kJ) is

One mole of a non-ideal gas undergoes a change of state (2.0 atm, 3.0 L, 95 K) → (4.0 atm, 5.0 L, 245 K) with a change in internal energy, Δ_rE° = 30.0 L atm. The change in enthalpy (Δ_rH°) of the process in L-atm is

[IIT JEE 2002]

Which of the following reactions defines Δ_fH° ?

Ethanol can undergo decomposition to form two sets of products

Q.
if the molar ratio of C₂H₄ to CH₃CHO is 8 : 1 in a set of product gases, then, energy involved in the decomposition process is

Direction (Q. No. 10) This sectionis based on statement I and Statement II. Select the correct answer from the code given below.

Q.

Statement I : Based on the following thermodynamic data
    

NO₂ is more stable than NO.

Statement II : NO (g) is an endothermic compound while, NO₂(g) is an exothermic compound.