Magnesium sulfate solution can be made by reacting magnesium oxide with dilute sulfuric acid - Edexcel - GCSE Chemistry - Question 6 - 2013 - Paper 1

To prepare magnesium sulfate solution, solid magnesium oxide is first added to a beaker containing dilute sulfuric acid. The reaction occurs, producing magnesium sulfate and water. It is important to use an excess of magnesium oxide to ensure that all the sulfuric acid reacts. Once the reaction is complete, the solution is filtered to remove any unreacted magnesium oxide, allowing for the collection of a pure magnesium sulfate solution.