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Which of the following reactions will de...

Which of the following reactions will define `DeltaH_(f)^(@)` ?

A

`C("diamond") + O_(2)(g) rarr CO_(2)(g)`

B

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

C

`N_2 (g) + 3H_2(g) rarr 2NH_3(g)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
Reactant should be in reference state and just one mole product should form.
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