- Is the salt soluble?
- Use a precipitation method (mix a solution with a positive ion with a solution with a negative ion)
- Is it a sodium, potassium or ammonium salt?
- Use a titration method. React an acid with a solution of sodium or potassium hydroxide or carbonate (or use ammonia solution).
- React an acid with an excess of solid metal, metal oxide, hydroxide or carbonate
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