electrolysis

?
during electrolysis,which electrode are the positive ions attracted to?
anode
1 of 7
why can ionic solids not undergo electrolysis?
an ionic solid cant be electrolysed because the ions are in fixed positions and cant move.
2 of 7
do ions get reduced or oxidised at the anode?
oxidised
3 of 7
during the manufacture of aluminium from bauxite, which electrode is aluminium formed at?
negative electrode (cathode)
4 of 7
in what situation will hydrogen gas be given out during the electrolysis of an aqueous solution of an ionic solid?
when the metal is more reactive than hydrogen, hydrogen will be produced instead of the metal. e.g sodium chloride ; sodium metal is more reactive than hydrogen therefore hydrogen gas is produced at the cathode and at the anode chlorine gas is there.
5 of 7
if halide ions are present in an aqueous solution of an ionic solid will oxygen be gas be released?
no, if no halide ions are present then oxygen will be formed at the anode.
6 of 7
what test could you use to determine if hydrogen gas has been produced in electrolysis reaction?
the squeaky pop test: place a lighted splint over the are where the gas has been produced(bubbles/effervescence) and if it is hydrogen then there will be a squeaky pop.
7 of 7

Other cards in this set

Card 2

Front

why can ionic solids not undergo electrolysis?

Back

an ionic solid cant be electrolysed because the ions are in fixed positions and cant move.

Card 3

Front

do ions get reduced or oxidised at the anode?

Back

Preview of the front of card 3

Card 4

Front

during the manufacture of aluminium from bauxite, which electrode is aluminium formed at?

Back

Preview of the front of card 4

Card 5

Front

in what situation will hydrogen gas be given out during the electrolysis of an aqueous solution of an ionic solid?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

chem 2a
See all Chemistry resources »See all Electrolysis resources »