C12.4 Tests for Positive Ions

• What colour does Lithium go in a Flame Test?

  Crimson
• What colour does Sodium go in a Flame Test?

  Yellow
• What colour does Potassium go in a Flame Test?

  Lilac
• What colour does Calcium go in a Flame Test?

  Orange-Red
• What colour does Copper go in a Flame Test?

  Green
• What happens if Sodium Hydroxide is added to a solution with Calcium ions?

  White Precipitate
• What happens if Sodium Hydroxide is added to a solution with Magnesium ions?

  White Precipitate
• What happens if Sodium Hydroxide is added to a solution with Aluminium ions?

  White Precipitate, dissolves in excess
• What happens if Sodium Hydroxide is added to a solution with Copper (II) ions?

  Blue Precipitate
• What happens if Sodium Hydroxide is added to a solution with Iron (II) ions?

  Green Precipitate
• What happens if Sodium Hydroxide is added to a solution with Iron (III) ions?

  Brown Precipitate