Electrochemistry

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Define electrolysis.

Back (Answer)

breakdown of an ionic compound, when molten or in aqueous solution, by the passage of an electric current

Front (Question)

What is the anode?

Back (Answer)

the positive electrode

Front (Question)

What is the cathode?

Back (Answer)

the negative electron

Front (Question)

What is the electrolyte?

Back (Answer)

the molten or aqueous substance that undergoes electrolysis

Front (Question)

What process occurs at the anode?

Back (Answer)

oxidation

Front (Question)

What process occurs at the cathode?

Back (Answer)

reduction

Front (Question)

Why are metal objects electroplated?

Back (Answer)

to improve their appearance and resistance to corrosion

Front (Question)

What process makes metal objects more resistant to corrosion and with improved appearance?

Back (Answer)

electroplating

Front (Question)

What does a hydrogen–oxygen fuel cell do?

Back (Answer)

uses hydrogen and oxygen to produce electricity with water as the only chemical product

#10

Front (Question)

Electrolysis of MOLTEN LEAD(II) BROMIDE: product at the anode

Back (Answer)

bromine

#11

Front (Question)

Electrolysis of MOLTEN LEAD(II) BROMIDE: product at the cathode

Back (Answer)

lead

#12

Front (Question)

Electrolysis of MOLTEN LEAD(II) BROMIDE: observations

Back (Answer)

cathode: silvery solid anode: brown gas

#13

Front (Question)

Electrolysis of concentrated aqueous NaCl: product at the anode

Back (Answer)

chlorine

#14

Front (Question)

Electrolysis of concentrated aqueous NaCl: product at the cathode

Back (Answer)

hydrogen

#15

Front (Question)

Electrolysis of concentrated aqueous NaCl: observations

Back (Answer)

cathode: colourless gas, lit splint squeaky pop anode: pale yellow-green gas (turns UI red and bleaches red litmus)

#16

Front (Question)

Electrolysis of dilute sulfuric acid: product at the anode

Back (Answer)

oxygen

#17

Front (Question)

Electrolysis of dilute sulfuric acid: product at the cathode

Back (Answer)

hydrogen

#18

Front (Question)

Electrolysis of dilute sulfuric acid: observations

Back (Answer)

anode: colourless gas, relights glowing splint cathode: colourless gas, lit splint squeaky pop

#19

Front (Question)

What forms at the cathode in the electrolysis of aqueous electrolytes?

Back (Answer)

cation below hydrogen in reactivity series- metal forms cation above hydrogen- hydrogen gas forms, metal ion stays in solution

#20

Front (Question)

What forms at the anode in the electrolysis of aqueous electrolytes?

Back (Answer)

• halide ions (like Cl– , Br– or I–) present - the element will form (chlorine etc) • other anions (eg sulfate, nitrate) - oxygen will form • from the dissociation of OH– ions as nitrate/sulfate ions are more reactive than OH- ions

#21

Front (Question)

What forms at the anode in the electrolysis of molten electrolytes?

Back (Answer)

non-metal

#22

Front (Question)

What forms at the cathode in the electrolysis of molten electrolytes?

Back (Answer)

metal

#23

Front (Question)

What forms in the anode?

Back (Answer)

non-metals (other than hydrogen)

#24

Front (Question)

What forms in the cathode?

Back (Answer)

metals, or hydrogen