testing for gases Flashcards
1
Q
How to test for hydrogen gas
A
You have a test tube of gas, replace the bung with a burning splint
2
Q
Indication of hydrogen
A
There will be a popping noise because its a small scale explosion
3
Q
How to test for oxygen gas
A
put a glowing splint into the tube of gas
4
Q
Indication of oxgygen
A
The splint will relight
5
Q
How to test for CO2 gas
A
Collect gas in a pipette and bubble it in a tube of limewater repeatedly
6
Q
Indication of CO2
A
The limewater bcomes cloudy
7
Q
What is limewater
A
Aqueus solution of calcium hydroxide in water (dissolved)
8
Q
How to test for chlorine gas
A
Put damp blue litmus paper at the mouth of a test tube of gas
9
Q
Indication of chlorine
A
Chlorine bleaches the litmus paper white
