Asked by Kat

4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g)

If standard enthalpy change is -906.2 kJ, what quantity of heat is evolved or absorbed in the formation of 17.0 g of NH3?

14 years ago

Answered by DrBob222

906.2 kJ heat is evolved for the formation of 4 moles NH3 (4*17 g NH3). So how much heat is evolved for 17.0 g?

14 years ago

Answered by Kat

I'm still a bit confused... I don't know where to start. What does 4*17g NH3 mean??

14 years ago

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