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For the reaction : C(3)H(8)(g) + 5O(2)...

For the reaction :
`C_(3)H_(8)(g) + 5O_(2) rarr 3CO_(2)(g) + 4H_(2)O(l)` a constant temperature, `Delta H - Delta U` is

A

`+ RT`

B

`- 3RT`

C

`+ 3RT`

D

`- RT`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta n_(g) = n_(p) - n_(r) = 3 - 6 = - 3`
`Delta H = Delta U + Delta n_(g) RT`
`Delta H - Delta U = - 3RT`
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