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For the reaction A(g)+2B(g)rarr2C(g)+3...

For the reaction
`A(g)+2B(g)rarr2C(g)+3D(g)`,
the value of `DeltaH` at `27^(@)C` is `19.0 kcal`. The value of `DeltaE` for the reaction would be
`(R=2.0 cal H^(-1)mol^(-1))`

A

20.8 kcal

B

19.8 kcal

C

18.8 kcal

D

20.2 kcal

Text Solution

Verified by Experts

The correct Answer is:
D
Use `Delta H= Delta E+ Delta n_(g)RT`
`Delta H= 19+2 xx 2 xx 10^(-3) xx 300= 20.2 kcal, Delta n_(g)= 2`
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