Identifying Cations Using NaOH (sodium Hydroxide)

Question 1

What happens when you add sodium hydroxide to salt with cations

Answer 1

There will be white precipitation
Metals Aluminum, calcium, magnesium

Question 2

What happens when you add excess sodium hydroxide aluminum (solution)

Answer 2

The white precipitation will dissolve

Question 3

How will you then identify magnesium and calcium

Answer 3

Flame test

Question 4

What happens when you add sodium hydroxide to
- Iron (II)
-Iron (III)
-Copper (II)

Answer 4

-Iron (II) dirty green precipitation
-Iron (III) brown/orange precipitation
-Copper (II) light blue precipitation