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April 20, 2014

Homework Help: Chemistry

Posted by Hannah on Saturday, January 21, 2012 at 7:16pm.

2)Which of the following equations represents a reaction for which the delta H can be called a standard enthalpy of formation, delta Hf?

a) FeO(s) + CO2(g) -> FeCO3(s)
b) 1/2 N2(g) + 2 O(g) -> NO2(g)
c) 2 Na(s) + Cl2(g) -> 2 NaCl(s)
d) Ba(s) + N2(g) + 3 O2(g) -> Ba(NO3)2(s)

e) more than one of the four equations above are standard enthalpies of formation.

I chose answer e.

For number 2 did you mean that my answer choice of e was correct or that just equation d is correct? Thank you for your help!!

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