CHEMICAL TESTS Flashcards
1
Q
What is the test for ammonium?
A
Add NaOH to the sample and heat slightly
A gas should be given off (ammonia)
Damp red litmus paper will bleach blue in the presence of ammonia
2
Q
What is the test for metal ions?
A
Add NaOH to sample and stir
A blue precipitate forms with Cu2+ ions
A green precipitate forms with Fe2+ ions
A brown precipitate forms with Fe3+ ions
3
Q
What is the test for carboxylic acids?
A
Add magnesium
Effervesence occurs in the presence of carboxylic acids
