Thermodynamics ...

The formation of water from H₂ (g) and O₂ (g) is an exothermic reaction because

Which one of the following expresses Q as the heat of combustion ?

Which one of the following expresses heat of formation of CO₂ ?

In which one of the following cases, the heat of neutralization is minimum?

The enthalpy of reaction at constant volume (∆E) is related to the enthalpy of reaction at constant pressure (∆H) as

When 1 mole of H₂O₂ is decomposed by platinum black, the heat evolved is 96.6 kJ. The heat of formation of 1 mole of H₂O₂ is

The heat of combustion of solid benzoic acid at constant volume is – 321.30 kJ at 27^oC. The heat of combustion at constant pressure is

A hypothetical reaction, A → 2 B, proceeds through following sequence of steps A → C; ∆H = q₁ , C → D; ∆H = q₂, 1/2 D → B ; ∆H = q₃ . The heat of reactions is:

The bond energy of H₂ is 436.4 kJ. This means that

If E, R and D represent respectively the tendency for minimum energy, tendency for maximum randomness and overall driving force and arrows represent the direction and magnitude of these tendencies, which one of the following applies correctly to the reaction 2HgO (s) → 2 Hg (l) + O₂ (g) ?