For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCL2)

perform the following calculations
A) calculate delta S at 298k ( delta H= -220.kj/mol and delta G= -206kj/mol
B) assuming that delta S and delta H change little with temperature, calculate at 450k

This is an incomplete question, here is a complete question.

For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂)

Perform the following calculations:

A) Calculate ΔS at 298 K (ΔH= -220 kJ/mol and ΔG= -206 kJ/mol

B) Assuming that ΔS and ΔH change little with temperature, calculate ΔG at 450 K.

Answer :

(a) The value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) The value of ΔG at 450 K is, -199 kJ/mol

Explanation :

(a) According to Gibb's equation:

= Gibbs free energy = -206 kJ/mol

= enthalpy change  = -220 kJ/mol

= entropy change = ?

T = temperature in Kelvin = 298 K

Now put all the given values in the above formula, we get:

Thus, the value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) According to Gibb's equation:

= Gibbs free energy = ?

= enthalpy change  = -220 kJ/mol

= entropy change = -0.0469 kJ/mol.K

T = temperature in Kelvin = 450 K

Now put all the given values in the above formula, we get:

Thus, the value of ΔG at 450 K is, -199 kJ/mol