When a mixture of aluminium powder and iron (III) oxide is ignited, it produces molten iron and alum

Question

When a mixture of aluminium powder and iron (III) oxide is ignited, it produces molten iron and aluminium oxide. In an experiment, 5.4 g of aluminium was mixed with 18.5 g of iron (III) oxide. At the end of the reaction, the mixture contained 11.2 g of iron, 10.2 g of aluminium oxide, and an undetermined amount of unreacted iron (III) oxide. No aluminium was left. What is the mass of the iron (III) oxide left?

Accepted Answer

Mass of Iron (III) oxide left = (5.4 + 18.5) - (11.2 + 10.2) = 2.5 g

Question

Options

Solution

More Mole Concept Questions