Metal hydroxides and testing for cations 4.8.3.2 Flashcards
1
Q
What is sodium hydroxide used for?
A
can be used to identify some metal ions (cations)
2
Q
What is formed when sodium hydroxide and cations mix?
A
precipitates
3
Q
What are white precipitates formed by?
A
- Aluminium ions
- Calcium ions
- Magnesium ions
- Zinc ions
4
Q
What are the coloured precipitates formed?
A
- Copper (II) - Blue
- Iron (II) - Green
- Iron (III) - Brown
