Calculate `DeltaH` of the following reaction at `25^(@)C`.
`4Fe(s)+3O_(2)(g)to2Fe_(2)O_(3)(s)`
Given: `Fe_(2)O_(3)(s)+3C("graphite")to2Fe(s)+3CO(g),DeltaH=117.30kcal`
C(graphite)`+O_(2)(g)toCO_(2)(g),DeltaH=-94.05kcal`
`CO(g)+(1)/(2)O_(2)(g)toCO_(2)(g),DeltaH=67.63kcal` at `25^(@)C`.

Determine the standard enthalpy of formation of FeO(s) and Fe_(2)(O_(3)(s) from the following data : 3C("graphite",s) +Fe_(2)O_(3)(s) to 2 Fe(s)+3CO(g), Delta H^(0)= 492.6 kJ C("graphite",s)+FeO(s) to Fe(s)+CO(g), Delta H^(0)= 155.8 kJ C( "graphite",s)+O_(2)(g) to CO_(2)(g),Delta H^(0)= -393.51 kJ CO(g)+(1)/(2)O_(2)(s) to CO_(2)(g), Delta H^(0)= -282.98 kJ

Justify the following reactions are redox reactions : Fe2O_(3)(s) +3CO(g)to2Fe(s)+3CO_(2)(g)

Calculate the enthalpy change for the reaction: C_(2)H_(4)(g)+3O_(2)(g) to 2CO_(2)(g)+2H_(2)O(l) Given: C_(2)H_(6)(g)+(7)/(2)O_(2)(g) to 2CO_(2)(g)+3H_(2)O(l),DeltaH^(0)=-1562.0kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH^(0)=-286.0kJ C_(2)H_(4)(g)+H_(2)(g)toC_(2)H_(6)(g),DeltaH^(0)=-32.0kJ

Calculate DeltaH^(0) for the following reaction at 298K: C_(2)H_(2)(g)+CO(g)+H_(2)O(l)toC_(2)H_(3)COOH(l) Given: at 298K temperature, C_(2)H_(3)CO_(2)H(l)+3O_(2)(g)to3CO_(2)(g)+2H_(2)O(l),DeltaH^(0)=-1368kJ 2C_(2)H_(2)(g)+5O_(2)(g) to 4CO_(2)(g)+2H_(2)O(l),DeltaH^(0)=-2600kJ 2CO(g)+O_(2)(g) to 2CO_(2)(g),DeltaH^(0)=-566kJ .

Diborane [B_(2)H_(6)(g)] is used as a very effective fuel for rockets. Calculate the heat of combustion of diborane for the following reaction: B_(2)H_(6)(g)+3O_(2)(g)toB_(2)O_(3)(g)+3H_(2)O(g) Given: (1) 2B(s)+(3)/(2)O_(2)(g)toB_(2)O_(3) (s),DeltaH^(0)=-1273kJ*mol^(-1) (2) H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH^(0)=-285.8kJ*mol^(-1) . (3) H_(2)O(l)toH_(2)O(g),DeltaH^(0)=+44kJ*mol^(-1) (4) 2B(s)+3H_(2)(g) to B_(2)H_(6)(g),DeltaH^(0)=+36kJ*mol^(-1) .

Given: C(graphite, s) +O_(2)(g)toCO_(2)(g),DeltaH^(0)=x_(1) C(graphite, s) +(1)/(2)O_(2)(g) to CO(g),DeltaH^(0)=x_(2) CO(g)+(1)/(2)O_(2)(g) to CO_(2)(g),DeltaH^(0)=x_(3) Express x_(3) in terms of x_(1) and x_(2) .

Given: C(s)+O_(2)(g)toCO_(2)(g),DeltaH=-393.5kJ 2H_(2)(g)+O_(2)(g)to2H_(2)O(g),DeltaH=-571.6kJ Calculate DeltaH of the reaction: C(s)+2H_(2)O(g)toCO_(2)(g)+2H_(2)(g) .

Predict the sign of DeltaS^(0) for the given reaction? 2H_(2)S(g)+3O_(2)(g)to2H_(2)O(g)+2SO_(2)(g) .

Calculate the enthalpy of formation of liquid ethyl alcohol from the following data. C_(2)H_(5)OH(l)+3O_(2)(g)to2CO_(2)(g)+3H_(2)O(l),DeltaH=-1368kJ C(s)+O_(2)(g)toCO_(2)(g),DeltaH=-393kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH=-287kJ .