Dilute sodium hydroxide solution is used to test for some metal ions, which form insoluble metal hydroxides.

Dilute sodium hydroxide solution is used to test for some metal ions, which form insoluble metal hydroxides.

1

In ionic equations, what name is given to the ions that are not shown in the equation (i.e. ions that are not involved in the formation of the precipitate)?

2

Write a balanced ionic equation for the formation of iron(III) hydroxide precipitate.

3

Write a balanced equation for the reaction of copper sulphate with sodium hydroxide.

4

Write a balanced ionic equation to show the formation of calcium hydroxide precipitate. Include state symbols.

5

Precipitation reactions can be written using equations which only include ions involved in the formation of the precipitate. What are these equations called?