Question

how do you calculate entropy in kcal/mol? Explain in steps

Answer 1

The entropy can be calculated by different methods depending upon the thermodynamic quantities given.

1) If we are given entropies of reactants and products of a reaction

A + B --. C+ D

So entropy of reaction = Sum of entropy of C and D - Sum of entropy of A and B

2) If Gibbs free energy and enthalpy is given

The we can use the following formula

so

Delta S = Change in entropy

3) If entropy in KJ / mole is given then we can convert it into KCal / mole by following formula

1 KJ/mole = 0.239Kcal / Mole