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Given (A) 2CO(g)+O2(g) to 2CO2 (g), Delt...

Given
`(A) 2CO(g)+O_2(g) to 2CO_2 (g), DeltaH_(1)^(theta)=-x kJ mol^-1`
`(B) C("graphite")+O_2(g) to 2CO_2 (g), DeltaH_(1)^(theta)=-y kJ mol^-1`
The `Delta H^theta` for the reaction
`C("graphite")+1/2O_2(g) to CO(g)` is

A

`(2x-y)/2`

B

`(x+2y)/2`

C

`(x-2y)/2`

D

`2y-x`

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Given : (i) C("graphite") +O_2(g)toCO_2(g)DeltarH^(Theta)="x kj "mol^(-1) (ii) C("graphite") +(1)/(2)O_2(g)toCO_2(g),DeltarH^(Theta)="y kj "mol^(-1) (iii) CO(g) +(1)/(2)O_2(g) toCO_2(g),DeltarH^(theta)="zkj" mol^(-1) Based on the above thermochemical equations, find out which one of the following algebraic relationships is correct ?

Given : (i) C("graphite") + O_(2)(g) rarr CO(g) ,Delta_(r )H^(@) = xkJ mol^(-1) (ii) C("graphite") + 1/2 O_(2)(g) rarr CO_(2)(g), Delta_(r )H^(@) = ykJ mol^(-1) (iii) CO(g) + 1/2 O_(2)(g) rarr CO_(2)(g) , Delta_(r )H = z kJ mol^(-1) Based on the above thermochemical equations, find out which one of the following algebraic relationships is correct ?

From the data at 25^(@)C : Fe_(2)O_(3)(s) +3C_(("graphite")) rarr 2Fe(s) + 3CO(g), DeltaH^(Theta) = 492.0 kJ mol^(-1) FeO(s) +C_(("graphite")) rarr Fe(s) CO(g), DeltaH^(Theta) = 155.0 kJ mol^(-1) C_(("graphite")) +O_(2)(g) rarr CO_(2)(g), DeltaH^(Theta) =- 393.0 kJ mol^(-1) CO(g)+(1)/(2)O_(2)(g) rarr CO_(2)(g), DeltaH^(Theta) =- 282.0 kJ mol^(-1) Calculate the standard heat of formation of FeSO(s) and Fe_(2)O_(3)(s) .

Methanol can be prepared synthetically by heating carbon monoxide and hydrogen gases under pressure in the presenc eof a catalyst. The reaction is CO(g) +2H_(2)(g) rarr CH_(3)OH(l) Determine the enthalpy of this reaction by an appropriate combinantion of the following date: a. C_(("graphite")) +(1)/(2)O_(2)(g) rarr CO(g), DeltaH^(Theta)=- 110.5kJ mol^(-1) b. C_(("graphite")) +O_(2)(g) rarr CO_(2)(g), DeltaH^(Theta) =- 393.5 kJ mol^(-1) c. H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(l), DeltaH^(Theta) =- 285.9kJ mol^(-1) d. CH_(3)OH(l) +(3)/(2)O_(2)(g)rarr CO_(2)(g) +2H_(2)O(l),DeltaH^(Theta) =- 726.6 kJ mol^(-1)

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