Qualitative Analysis Flashcards
1
Q
Describe the test for presence of ammonia gas
A
Test with a piece of moist red litmus paper. It will turn blue.
2
Q
Describe the test for presence of carbon dioxide
A
Bubble the gas through limewater, Ca(OH)₂. A white precipitate , CaCO3 is formed.
3
Q
Describe the test for presence of chlorine gas
A
Test with a piece of moist blue litmus paper. It will turn red then bleached.
4
Q
Describe the test for hydrogen gas
A
Place a lighted splint near the gas. Gas extinguishes lighted splint with a ‘pop’ sound.
5
Q
Describe the test for presence of oxygen gas
A
Place a glowing splint near the gas. Gas reignites glowing splint.
