A student investigates the displacement reaction between iron and copper(II) sulfate solution:
Fe (s)+CuSO4(aq)→FeSO4(aq)+Cu (s) \text{Fe (s)} + \text{CuSO}_4\text{(aq)} \rightarrow \text{FeSO}_4\text{(aq)} + \text{Cu (s)} Fe (s)+CuSO4(aq)→FeSO4(aq)+Cu (s)The student adds 2.5 moles2.5\text{ moles}2.5 moles of iron powder to a solution containing 1.8 moles1.8\text{ moles}1.8 moles of copper(II) sulfate.
Show that the iron is in excess.
258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.