A chemist prepares a pure sample of hydrated nickel(II) sulfate crystals (NiSO4⋅6H2O\text{NiSO}_4 \cdot 6\text{H}_2\text{O}NiSO4⋅6H2O) by reacting excess nickel(II) carbonate with hot dilute sulfuric acid, filtering off the unreacted carbonate, and crystallising the salt from the filtrate.
State two practical reasons why the percentage yield of the recrystallised nickel(II) sulfate is less than 100%.
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.