The free energy change for the following reaction are given below: C_(2)H_(2)(g)+(5)/(2)O_(2)(g) to 2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234J C(s)+O_(2)(g)toCO_(2)(g),DeltaG^(@)=-394kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaG^(@)=-237kJ what is the standard free energy change for the reaction? H_(2)(g)+2C(s)toC_(2)H_(2)(g)

The free energy change for the following reaction are given below: C_

1.	The free energy change for the following reaction are given below: C_(2)H_(2)(g)+(5)/(2)O_(2)(g) to 2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234J C(s)+O_(2)(g)toCO_(2)(g),DeltaG^(@)=-394kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaG^(@)=-237kJ what is the standard free energy change for the reaction? H_(2)(g)+2C(s)toC_(2)H_(2)(g)
Answer» `-209kJ` `-2259kJ` `+2259kJ` `209kJ` SOLUTION :`C_(2)H_(2)(g)+(5)/(2)O_(2)(g) to 2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234kJ`. . (i) `C(s)+O_(2)(g) to CO_(2)(g),DeltaG^(@)=-394KJ` . . (ii) `H_(2)(g)+(1)/(2)O_(2)(g) to H_(2)O(l),DeltaG^(@)=-237kJ` . . (iii) EQS. (ii)+(iii)-(i). `2C(s)+H_(2)(g)toC_(2)H_(2)(g)` `DeltaG^(@)=2(-394)+(-237)-(-1234)=209kJ`.