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