IDENTIFICATION OF IONS AND GASES

Flame colour for copper ions

• Blue

• Red

• Blue - green

• Yellow

Flame colour for sodium ions

• Blue
• Red
• Green
• Yellow

Flame colour for lithium ions

• Blue
• Red
• Green
• Yellow

Metal ion with a lilac flame

• Na⁺
• K⁺
• Na²⁺
• K²⁺

Colour of precipitate when sodium hydroxide is added to a Calcium ion solution.

• White

• Red - brown

• Green

• Blue

Colour of precipitate when sodium hydroxide is added to a copper(II) ion solution.

• White

• Red - brown

• Green

• Blue

Colour of precipitate when sodium hydroxide is added to a iron(II) ion solution.

• White

• Red - brown

• Green

• Blue

Colour of precipitate when sodium hydroxide is added to a iron(III) ion solution.

• White

• Red - brown

• Green

• Blue

How can you tell if you have aluminium ions when you add sodium hydroxide?

• Get a white precipitate.
• Get a cream precipitate.
• Get a white precipitate that dissolves in excess
• Get a cream precipitate that dissolves in excess

Test for bromide ions is....

• Add acid
• Add barium chloride
• Add silver nitrate