Thermodynamics ...

What is the absolute enthalpy of neutralisation of the following reaction?

MgO (s) + 2HCl (aq) → MgCl₂ (aq) + H₂O (l)

The enthalpy change involved in the oxidation of glucose is -2880 kJ/mol and 25% of this energy is available for muscular work. If 100 kJ of muscular work is needed to walk 1 km, then what is the maximum distance that a person will be able to walk after consuming 120 g of glucose?

The species, which by definition has zero standard molar enthalpy of formation at 298 K, is

Which of the following pairs of chemical reactions is certain to result in a spontaneous reaction?

Consider the following reactions:

(i) H₂O (l) → H₂O (g), T = 25°C vessel open to atmosphere with 50% relative humidity.
(ii) H₂O (s) → H₂O (l), T = 25°C, P = 1 atm

Which of these will be spontaneous under the given conditions of temperature and pressure?

The factor of ∆G values is important in metallurgy. The ∆G values for the following reactions at 800^oC are given as:

S₂ (s) + 2O₂ (g) → 2SO₂ (g); ∆G = - 544 kJ
2Zn (s) + S₂ (s) → 2ZnS (s); ∆G = - 293 kJ
2Zn (s) + O₂ (g) → 2ZnO (s); ∆G = - 480 kJ

What is ∆G for the following reaction?

2ZnS (s) + 3O₂ (g) → 2ZnO (s) + 2SO₂ (g)