Electrolysis Flashcards
1
Q
Suggest how an electrode is washed [1]
A
distilled water
2
Q
How can an electrode be dried quickly? [1]
A
oven
3
Q
What does chlorine do to Universal Indicator?
[1]
A
indicator bleached
4
Q
Suggest why bubbles of gas were not seen immediately in electrolysis [1]
A
gas dissolves in solution
5
Q
ph of hcl [1]
A
1
6
Q
State what must be done to sodium chloride before it can be used for electrolysis [1]
A
heat until it melts
7
Q
Describe what else can be done to sodium chloride to allow it to conduct electricity [1]
A
dissolve in water
8
Q
Explain why sodium chloride does not conduct electricity when solid, but when molten [3]
A
ions
ions fixed
ions are mobile
9
Q
Does bulb dim or get brighter when concentrated electrolyte used [1]
A
brighter
10
Q
When asked for suitable electrolyte ALWAYS WRITE AQUEOUS
A
