Cations Flashcards
1
Q
What is used during precipitation reactions
A
NaOH
2
Q
What colour precipitate does iron 2 have
A
Green
3
Q
What colour precipitate does Fe 3 have
A
brown
4
Q
What colour precipitate does copper have
A
blue
5
Q
What colour precipitate does calcium have
A
white
6
Q
What colour precipitate does aluminium have
A
white
7
Q
How do you tell the difference between the 2 white precipitates
A
add excess NaOH, AlOH forms colourless solution
8
Q
How can you test for Ammonium ions
A
add to solution, heat if NH3 gas then present, sharp smell
9
Q
What is the test for ammonia gas
A
damp red litmus paper turns blue
