This question is about displacement and redox reactions.
The displacement reaction between magnesium and iron(III) oxide has a high activation energy.
What is meant by 'activation energy'?
A mixture contains 1.20 kg1.20\text{ kg}1.20 kg of magnesium and 4.50 kg4.50\text{ kg}4.50 kg of iron(III) oxide.
The equation for the reaction is:
3Mg+Fe2O3→3MgO+2Fe 3\text{Mg} + \text{Fe}_2\text{O}_3 \rightarrow 3\text{MgO} + 2\text{Fe} 3Mg+Fe2O3→3MgO+2FeShow that magnesium is the limiting reactant.
Relative atomic masses (ArA_rAr): O=16\text{O} = 16O=16, Mg=24\text{Mg} = 24Mg=24, Fe=56\text{Fe} = 56Fe=56
Magnesium displaces zinc from zinc sulfate solution.
Complete the ionic equation for the reaction. You should include state symbols.
Mg(s)+Zn2+(aq)→________+________ \text{Mg(s)} + \text{Zn}^{2+}\text{(aq)} \rightarrow \text{\_\_\_\_\_\_\_\_} + \text{\_\_\_\_\_\_\_\_} Mg(s)+Zn2+(aq)→________+________Explain why the reaction between magnesium atoms and zinc ions is both oxidation and reduction.