[fatimaafi45]

Hello,
I have a thermochemistry question:
Write the complete thermochemical equation that corresponds to ΔHf° for glycine, C2H5O2N(s)=-126.33 kJ/mol.
I've tried the problem and I got this:

2C(s, graphite) + 2.5H2(g) + O2(g)+N(s) = C2H5O2N(s)

I'm not sure if its right or not, and we didn't really go over this in class.

[sjb]

Seems sensible, but check your states of matter and allotropes.

[XeLa.]

You may have the reaction part right, but remember that it's a thermochemical equation so that means you need a respective enthalpy value (I assume it's at 25°C). You're given the heat of formation for glycine, but see if you can look up the others if you don't know them.

KungKemi