Thermodynamics ...

On the basis of thermochemical equations (a), (b) and (c), what is the enthalpy of formation of ethane? (Assume that enthalphy of formation of ethane is p.)

(a) C (s) + O₂ → CO₂ (g); ∆H = x kJ
(b) H₂ (g) + ½ O₂ (g) → H₂O (l); ∆H = y kJ
(c) C₂H₆ (g) + 7/2 O₂ (g) → 2CO₂ + 3H₂O (g); ∆H = z kJ

The standard molar entropy of H₂O (l) is 70 JK^-1. The standard molar entropy of H₂O (s) is

Consider the reaction:

A + B ⇌ C + D

At 27^oC, for which K = 10², what will be the values of ∆G and ∆G^o?

The essential condition for feasibility of a reaction is that the

After dividing a substance into two equal parts, which of the following properties of the substance reduces to half?

Match the terms in Column - I of the following table with the expressions in Column - II:

W is the amount of work done to melt an ice cube. Heat transfer which took place in the reaction is q. What is the change in the internal energy (∆U) of the system?