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chemical changes
electrolysis
rp 3: electrolysis
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shannon rose
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Cards (5)
pour 50 cm3 of
copper
(II)
chloride
solution
/
sodium chloride
solution
into a beaker
place a petri dish w 2 holes over the beaker
put
carbon graphite
rods into each hole
attach crocodile leads to the rods & connect them to the terminals of a
low voltage
power supply
select
4
V on the power supply & switch it on
what is produced at the cathode when copper (II) chloride is electrolysed?
copper
what is produced at the anode when copper (II) chloride is electrolysed
chlorine
gas
- test w
damp
blue
litmus paper
what is produced at the anode when sodium chloride is electrolysed?
chlorine
gas
what is produced at the cathode when sodium chloride is electrolysed?
hydrogen gas
- test w
lit splint