Chemical Changes RQP- electrolysis of aqueous solutions using inert electrodes Flashcards
1
Q
what are the three products you need to know how to identify?
A
hydrogen, oxygen, chlorine
2
Q
how is hydrogen identified?
A
lighted splint goes out with a squeaky pop
3
Q
how is oxygen identified?
A
a glowing splint relights
4
Q
how is chlorine identified?
A
damp blue litmus paper turns red and is then bleached white
5
Q
what process happens at the negative electrode?
A
reduction
6
Q
what process happens at the positive electrode?
A
oxidation
7
Q
draw the apparatus for this experiment
A
- electrolyte drawn as a rectangle with no top with a line through the middle (beaker)- label electrolyte
- above, draw a circuit with a power supply (battery- can draw pos on the left and neg on the right)
- draw the positive and negative electrodes coming off of this and partially in the water
