Explain a delta hf value, which on of the following is the

Explain a delta hf value

Reference no: EM13297252

which on of the following is the correct formation reaction that properly defines a delta Hf value?

The answer is 1/2 N2 (g) + O2 (g) + NO2(g)

But I have no idea what a formation reaction is, and how I would know this is it. Can someone please explain.

Reference no: EM13297252

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