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At constant P and T which of the followi...

At constant P and T which of the following statement is correct for, `C (s) + O_(2)(g) rarr CO_(2)` (g)

A

`DeltaH = DeltaE`

B

`Delta H lt DeltaE`

C

`Delta H gt DeltaE`

D

`DeltaH` is independent of the physical state of reactants

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The correct Answer is:
A
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At constant T and P which one of the following statements is correct for the reaction : CO(g) + (1)/(2) O_(2)(g) rarr CO_(2)(g)

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With the help of a thermochemical equation, calculate Delta_(f)H^(@) at 298 K for the following reactions : "C(graphite)" + O_(2)(g) rarr CO_(2)(g) , Delta H = -393.5 kJ//mol H_(2)(g) + (1)/(2)O_(2)(g) rarr H_(2)O(l) , Delta_(f)H^(@) = -285.8 kJ//mol CO_(2)(g) + 2H_(2)O(l) rarr CH_(4)(g) + 2O_(2)(g) , Delta_(f)H^(@) = +890.3 kJ//mol

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