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How does aluminum react with ferric oxide?

1 Answer

Dec 24, 2016

#Fe_2O_3 + 2Al rarr 2Fe + Al_2O_3 + Delta#

Explanation:

The stoichiometric equation is balanced as it must be, and it dictates 2:1 molar equivalence between aluminum and iron oxide.

#"Moles of aluminum"# #=# #(40.5*g)/(27.0*g*mol^-1)# #=# #1.5*mol#

And, clearly, given the stoichiometry, #0.75*mol# of ferric oxide are required for equivalence, i.e. #0.75*molxx159.69*g*mol^-1# #~=120*g#.

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