When iron rusts in air, iron (Ill) oxide is produced. How many moles of oxygen react with 6.4 mol of iron in the rusting reaction?

1 Answer
Meave60
Jun 16, 2018

#"4.8 mol O"_2"# react with #"6.4 mol Fe"#.

Explanation:

Balanced equation

#"4Fe(s) + 3O"_2("g")"##rarr##"2Fe"_2"O"_3("s")"#

Multiply the given moles of iron by the mole ratio between oxygen and iron from the balanced equation, with moles oxygen in the numerator.

#6.4color(red)cancel(color(black)("mol Fe"))xx(3"mol O"_2)/(4color(red)cancel(color(black)("mol Fe")))="4.8 mol O"_2"#

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