This question is about displacement reactions.
The displacement reaction between aluminium and copper(II) oxide has a high activation energy.
What is meant by 'activation energy'?
A mixture contains 0.50 kg0.50\text{ kg}0.50 kg of aluminium and 2.50 kg2.50\text{ kg}2.50 kg of copper(II) oxide.
The equation for the reaction is:
2Al+3CuO→Al2O3+3Cu 2\text{Al} + 3\text{CuO} \rightarrow \text{Al}_2\text{O}_3 + 3\text{Cu} 2Al+3CuO→Al2O3+3CuShow that aluminium is the limiting reactant.
Relative atomic masses (ArA_rAr): O=16\text{O} = 16O=16, Al=27\text{Al} = 27Al=27, Cu=64\text{Cu} = 64Cu=64
Zinc displaces copper from copper(II) sulfate solution.
Complete the ionic equation for the reaction. You should include state symbols.
Zn(s)+Cu2+(aq)→________+________ \text{Zn(s)} + \text{Cu}^{2+}\text{(aq)} \rightarrow \text{\_\_\_\_\_\_\_\_} + \text{\_\_\_\_\_\_\_\_} Zn(s)+Cu2+(aq)→________+________Explain why the reaction between zinc atoms and copper(II) ions is both oxidation and reduction.