Balancing Chemical Equations: Considering States of Reactants and Products

[campa]

2NH3(s) + 3Cl2(g) -> N2(g) + 6HCl(g)

What should the state of NH3 be?

 

[DrMark]

NH₃(s) ? What temperature are you working at ?

 

[Borek]

At STP ammonia is a gas, although in lab practice it is most commonly used as a water solution.

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[DrMark]

At STP ammonia is a gas, although in lab practice it is most commonly used as a water solution.


Borek

Yeah, my thought was that he was talking about NH₃(aq) (which is NH₄OH), not the solid. Which of course produces (with Cl₂(g)) NCl₃ a moderate explosive. Hey haven't we all played with NI₃ ... the stories I could tell ;)

 

[campa]

the equation was given to us like 2NH3(s) + 3Cl2(g) -> N2(g) + 6HCl(g) I'm not sure about the temperature though. And it also said that with extra Cl2 you get the equation like Cl2(g)+NH3(g) -> NCl3(g) + HCl(g)
I suppose the state of NH3 in the first equation must be gas. The teacher must have misprinted it!

 

[DrMark]

the equation was given to us like 2NH3(s) + 3Cl2(g) -> N2(g) + 6HCl(g) I'm not sure about the temperature though. And it also said that with extra Cl2 you get the equation like Cl2(g)+NH3(g) -> NCl3(g) + HCl(g)
I suppose the state of NH3 in the first equation must be gas. The teacher must have misprinted it!

Close but one of the products from the gas phase reaction is NH₄Cl(s).

 

[campa]

but I thought that you get NH4Cl(s) when you use extra NH3

 

[DrMark]

but I thought that you get NH4Cl(s) when you use extra NH3

Another hint: H₂(g).