Question

I. The values for the change in entropy and enthalpy was obtained for an unknown chemical reaction.

The reaction started at 10°C and the values for the thermodynamic parameters began to be consistent

at room temperature.

5. The change in entropy and enthalpy remained constant throughout a temperature range of 25°C -

200°C. Determine whether your answer above will change at specific values of this temperature range.

Answer 1

For any reaction .

Enthalpy Change = Internal energy change + delta n_g R T .

Enthalpy change = summation of gaseous coefficients of product enthapy - summation of gaseous coefficients of reactants enthalpy

Entropy change = Enthalpy changes/ T.

T = temperature.

When T change then entropy will change .