Gc Sos

[RT0223]

---

Members don't see this ad.

kaplan GC subject test 1

N2 (g) + 2H2 (g) <--> 2NH3 (g) + 22 kcal
what happen if increase temperature?

ans: the yield of ammonia is decreased because the rxn is exothermic

however, I remember one of the destroyer question said if the temp is + the rxn is endo

very confusing, 😕😕😕, please help!

 

[PooyaH]

kaplan GC subject test 1

N2 (g) + 2H2 (g) <--> 2NH3 (g) + 22 kcal
what happen if increase temperature?

ans: the yield of ammonia is decreased because the rxn is exothermic

however, I remember one of the destroyer question said if the temp is + the rxn is endo

very confusing, 😕😕😕, please help!

This just means the product side has given 2NH3 PLUS/AND heat! if it said deltaH of the reaction is +22kcal, then it would've been endothermic!

 

[alanan84]

You beat me to it Pooyah!

 

[PooyaH]

You beat me to it Pooyah!

Maybe next time! lol jk

 

[alanan84]

Maybe next time! lol jk

Haha, I got excited because I realized what was going on in that question and the second I hit reply I saw you had already beat me. You stole all me thunder!

 

[RT0223]

thank you Pooyah and Alanan84!

 

[RT0223]

here is the second part of my question, how do you know whether it's exo or endo?

 

[alanan84]

here is the second part of my question, how do you know whether it's exo or endo?

Most questions that I've seen will say delta H (but not part of the equation). If delta H is negative it is exo, if it is positive then it's endo. Remember that exothermic is just the same thing as putting heat on the product side of the equation and endothermic is the same thing as putting heat on the reactant side. Hope that helps!