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DeltaHltDeltaU for the reaction(s) :...

`DeltaHltDeltaU` for the reaction(s) :

A

`N_(2)(g)+3H_(2)(g)rarr2NH_(3)(g)`

B

`Ag_(2)O(s)rarr2Ag(s)+(1)/(2)O_(2)(g)`

C

`CO(g)+(1)/(2)O_(2)(g)rarrCO_(2)(g)`

D

`C(s)+O_(2)(g)rarrCO_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
`DeltaH=DeltaU+Deltan_(g)RT`
`(a) Deltan_(g)=-2" "DeltaUgtDeltaH`
`(b) Deltan_(g)=+(1)/(2)" "DeltaUgtDeltaH`
`(c )Deltan_(g)=-(1)/(2)" "DeltaU gt DeltaH`
`(d) Deltan_(g)=0 " "DeltaU=DeltaH`
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