Detection of substances Flashcards
1
Q
How do you detect carbon dioxide?
A
Bubble limewater (calcium hydroxide solution)
and if CO2 is present a white precipitate will form
2
Q
How do you detect chlorine?
A
Hold a piece of damp blue litmus aper near where the chlorine is. If chlorine is present the paper will turn red then white
3
Q
How do you detect hydrogen?
A
place a lighted splint near the gas and the splint should ignite with a squeaky pop
4
Q
How do you detect oxygen?
A
Place a glowing splint near the gas and if it relights oxygen is present.
