1.

The free energy change for the following reactions are given below, C_(2)H_(2)(g)+(5)/(2)O_(2)(g)rarr2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234 kJC(s)+O_(2)(g)rarrCO_(2)(g)DeltaG^(@)=-394 kJH_(2)(g)+(1)/(2)O_(2)(g)rarrH_(2)O(l)DeltaG^(@)=-237 kJWhat is the standard free energy change for the reaction H_(2)(g)+2C(s)rarrC_(2)H_(2)(g)

Answer»

`-209 kJ`
`-2259 kJ`
`+2259 kJ`
209 kJ

Solution :By `2XX(ii)-(i)+(III)`
`H_(2(g))+2C_((s))rarrC_(2)H_(2(g)), DeltaG^(@)=209 kJ`.


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