Metal Hydroxides 2
Chemistry: AQA GCSE Higher, topic 8.3.4
Metal Hydroxides - Copper, Iron(II) and Iron (III)
Here are some more examples of the formation of precipitates:
Copper(II) hydroxide
- Copper ions (Cu2+) form the blue precipitate copper(II) hydroxide.
- Cu2+(aq) + 2OH-(aq) → Cu(OH)2(s)
Iron(II) hydroxide
- Iron(II) ions (Fe2+) form the green precipitate iron(II) hydroxide.
- Fe2+(aq) + 2OH-(aq) → Fe(OH)2(s)
Iron(III) hydroxide
- Iron(III) ions (Fe3+) form the brown precipitate iron(III) hydroxide.
- Fe3+(aq) + 3OH-(aq) → Fe(OH)3(s)
Test yourself on Metal Hydroxides 2
Which metal ion needs the most hydroxide ions to form a precipitate?
Which statement correctly compares the hydroxide ions needed by each pair of ions?