Chemistry 0620 · IGCSE · Preparation of salts

Preparation of salts — practice question

Magnesium sulfate is a soluble solid that forms when insoluble magnesium oxide reacts with dilute sulfuric acid. Which method is used to obtain solid magnesium sulfate?

  • AExcess sulfuric acid is reacted with magnesium oxide. The mixture is evaporated to dryness.
  • BExcess sulfuric acid is reacted with magnesium oxide. The precipitate is filtered, washed and dried.
  • CSulfuric acid is reacted with excess magnesium oxide. The mixture is filtered and the filtrate is evaporated to dryness.
  • DSulfuric acid is reacted with excess magnesium oxide. The precipitate is filtered, washed and dried.

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