chemistry

posted by blobface

Nitrogen gas, N2, is usually a very inert gas and thus, is often employed in dry boxes. However, it would be a poor choice for use in a dry cell with which of the following substances?
A) uranium metal
B) Cu/Sn alloys
C) Li metals
D) Ca metals
E) none of these

can anyone help me please?


This question is tough. U forms three nitrides but not easily AND I don't know that U is be used in a dry cell. It is a ceramic like material and is used in uranium fuel rods.

Ca metal forms a nitride, also, at elecvated temperature; for example, when Ca burns in air some Ca3N2 is formed along with CaO. However, I don't know that Ca is used in a dry cell.

Li form a nitride, Li3N, quite easily and is used as an electrode in some batteries. I would choose this one as an answer for the question since we know that Li is used in batteries.

http://en.wikipedia.org/wiki/Lithium_nitride

does the fact that lithium and nitride bond to form LiN3 easily mean its a good choice or bad choice for dry cell? the question asked which would be a poor choich to use nitrogen gas in for a dry cell?

I think it would be a poor choice because the Li might react with the N2 gas to form the Li3N. I'm just making an educated guess.

ok i see your point thank you so much

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