Hi, guys, can anybody help me to solve the following tasks:
1. CO(g)+O2(g) :rarrow:CH3OH(l) ΔH=-128kJ
At what temperature this system reach equilibrium? Use the following standard entropy values
substance S° J/Kxmol
CO(g) 197.7
O2(g) 130.7
CH3OH(l) 239.7
2. Write the equilibrium constant expression for the reaction
4HCl(g)+O2(g) ::equil::2H2O(g)+2Cl2(g) ΔH<0
Predict the direction of the shift of equilibrium position in response to each of the following changes in conditions:
the temperature is increased;
the pressure is decreased;
a catalyst is added;
oxygen is added.
Thank you beforehand, guys.
For the first question -
At equilibrium -delta G=0
delta G = delta H - T deltaS
T =delta H/delta S
Second question -
the temperature is increased-it will go in the direction of endothermic reaction -left
the pressure is decreased = it will go in the direction of the high pressure =left
a catalyst has no effect on the equilibrium
oxygen is added- it will go in the direction so that this extra amount of Oxygen is used.