Experimental techniques Flashcards
1
Q
Pipette
A
Accurately measure 25.0 cm^3 of liquid
2
Q
Burette precision
A
nearest 0.1 cm^3
3
Q
Measuring cylinder precision
A
nearest 0.5 cm^3
4
Q
syringe vs gas syringe
A
liquid vs gas
5
Q
displacement of water
A
used to collect gases not very soluble in water (hydrogen)
6
Q
downward delivery
A
used to collect gases which are denser than air (carbon dioxide)
7
Q
upward delivery
A
used to collect gases that are less dense than air (ammonia)
8
Q
drying agents
A
fused (anhydrous) calcium chloride:
dry gases which does not react with calcium chloride
conc sulfuric acid:
used to dry acidic gases such as carbon dioxide
quick lime
dry basic gases such as ammonia
