Home
Class 12
CHEMISTRY
The difference between DeltaH and Delta...

The difference between `DeltaH and DeltaU (DeltaH - DeltaU)`, when the combustion of one mole of heptane (l ) is carried out at a temperature T, is equal to: `–xRT`. The value of x is_____.

A

`-4 RT`

B

`4 RT`

C

`-3 RT`

D

`3 RT`

Text Solution

Verified by Experts

The correct Answer is:
A
Heptane, `C_(7)H_(16)(l) + 11 O_(2)(g) rarr 7CO_(2) (g) + 8H_(2) (l)`
Since temperature T is given assume it at room temperature.
`Delta H = Delta U + Delta n(g) RT`
`Delta H - Delta U = -4RT`
`Delta(g) = 7 -11 = -4`
Promotional Banner

Similar Questions

Explore conceptually related problems

The difference between Delta H and DeltaU(DeltaH - DeltaU) , when the combustion of one mole of heptane (l) is carried out at a temperature T, is equal to:

The difference between DeltaH and DeltaE (on a molar basis) for the combustion of n-octane (l) at 25^(@)C would be:

The difference between DeltaH and DeltaE on a molar basis for the combustion of n-octane(l) at 25^(@) C would be :

What is the value of DeltaH-DeltaU for the combustion of Heptane (l) ?

DeltaU^(-) of combustion of methane is -x kJ mol^(-1) . The value of DeltaH^(-) is:

DeltaU^(Θ) of combustion of methane is -XkJ mol^(-1) . The value of DeltaH^(Θ) is

The difference between the value of DeltaH (hydration) of X^- ion is maximum for which of the following pairs of ions?

Derive relationship between DeltaH and DeltaU .Give example when (i) DeltaH lt DeltaU (ii) DeltaH = DeltaU (iii) DeltaH gt DeltaU