Question

(iii) Molecular crystals
(iv) Covalent crystals.
5. Discuss the variation of heat of reaction with temperature and derive
Kirchoff's equations
43
Write short notes on the following:
44​

Answer 1

Answer:

Kirchoff's law describes the variation of enthalpy of a reaction with the change in temperature. And at constant pressure, if the heat capacities (c

p

) do not vary with temperature then the change in enthalpy is a function of the difference in temperature and the heat capacities.

ΔH

2

=ΔH

1

+Δc

p

(T

2

−T

1

)

So, equations C and D are the form of the above equation.

The equation B) dH=TdS+VdP is derived from the second law of thermodynamics.

Explanation:

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