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The difference between the heats of reac...

The difference between the heats of reaction at constant pressure and a constant volume for the reaction `2C_(6)H_(6)(l) + 15O_(2)(g) rarr 12CO_(2)(g) + 6H_(2)O(l)` at `25^(@)C` in `kJ` is

A

`-7.43`

B

`+3.72`

C

`-3.72`

D

`+7.43`

Text Solution

Verified by Experts

`2C_(6)H_(6)(l) +15O_(2) rarr 12CO_(2)(g) +6H_(2)O(l)`
`DeltaH = DeltaE +Deltan_(g)RT`
`DeltaH - DeltaE = Deltan_(g)RT`
`Deltan_(g) = 12 - 15 =- 3`
`DeltaH - DeltaE =- 3 xx 8.314 xx 298 =- 7432.716 J`
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Knowledge Check

  • The difference between heats of reaction at constant pressure and at constant volume for the reaction 2C_(6)H_(6)(l)+15O_(2)(g)rarr12CO_(2)(g)+6H_(2)O(l)" at "25^(@)C in kJ is

    A
    `-7.43`
    B
    `+3.72`
    C
    `-3.72`
    D
    `+7.43`

  • The difference between the heats of reaction at constant pressure and constant volume for the reaction. 2C_(6)H_(6)(l)+15O_(2)(g) to 12CO_(2)(g)+6H_(2)O(l) "at" 25^(@)C in kJ is

    A
    `-7.43`
    B
    `+3.72`
    C
    `-3.72`
    D
    `+7.43`

  • The difference heats of reaction at constant pressure and constant volume for the reaction 2C_(6)H_(6)(l)+15O_(2)(g)rarr 12CO_(2)(g)+6H_(2)O(l) at 25^(@)C in KJ is

    A
    `+7.43`
    B
    `+3.72`
    C
    `-7.43`
    D
    `-3.72`
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