C3 - Tests For Negative Ions Flashcards
1
Q
What will happen if the CO2 test is positive?
A
The limewater will turn cloudy.
2
Q
How do you test for carbonate ions?
A
React with dilute acid & see if CO2 is produced.
3
Q
What is the reaction for a carbonate & an acid?
A
Acid + carbonate -> salt + water + CO2
4
Q
What is the test for halide ions?
A
Add dilute nitric acid then silver nitrate solution.
5
Q
What precipitate do chlorine ions form?
A
White precipitate of silver chloride.
6
Q
What precipitate do bromide ions form?
A
Cream precipitate of silver bromide.
7
Q
What precipitate do iodide ions form?
A
A yellow precipitate of silver iodide.
8
Q
What is the test for CO2?
A
Bubbling a gas through limewater.
