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Which of the reaction defines Delta(f)H^...

Which of the reaction defines `Delta_(f)H^(@)` ?

A

`C_("(diamond)") + O_(2)(g) to CO_(2)(g) `

B

`1/2H_(2)(g)+1/2F_(2)(g)to HF(g)`

C

`N_(2)(g)+3H_(2)(g) to 2NH_(3)(g)`

D

`CO(g)+1/2O_(2)(g)to CO_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
b
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