[todd710]

Consider the reaction 2Al(s) + Fe2O3(s) --> 2Fe(l) + Al2O3(s). If 2 moles of Al(s) and 3 moles of Fe2O3(s) are available at the start of the reaction.

Question: Which substance will be the limiting reactant?

The answer key has the answer "Al(s)" but my son has the answer "Al" and insists it is right.  I know the answer is Al(s) but cannot adequately explain why?.  Could some expound?

TIA

Todd

[crosemeyer]

I think the (s) and (l) simply denote solid and liquid.

[todd710]

I think the (s) and (l) simply denote solid and liquid.

I agree.  If I were to state the answer as "Al(g)" would that be correct?  If I put down "Al" it the "(s)" assumed?

[Borek]

Al(g) would not make much sense, as you need quite high temperature to boil Al.

Al(s) vs Al - a lot depends on the teacher. I would accept (in this case) both answers, but some are nitpicky and they may want Al(s).