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Chemistry > Electrolysis > Flashcards

Electrolysis Flashcards

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1
Q

What us electrolysis?

A

Using electricity to split ionic compounds

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2
Q

What are the main uses of electrolysis?

A

Extracting metals
Making chlorine gas
Making hydrogen gas
Making soaps

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3
Q

What are molten/dissolved ionic compounds called?

A

Electrolyte

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4
Q

Why must the compound be dissolved ?

A

Because the ions are free to moves so they can carry charge so they can conduct electricity

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5
Q

Why are solid compounds not electrolytes?

A

Because their ions cannot move so they can’t carry charge so they cannot conduct electricity

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6
Q

What are the two electrodes called?

A

Cathode (negative)

Anode (positive)

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7
Q

Where does positive ions go to?

A

Cathode

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8
Q

Where does negative ions go to?

A

Anode

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9
Q

Where does oxidation occur?

A

Anode

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10
Q

Where does reduction occur?

A

Cathode

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11
Q

What is reduction?

A

Gain of electrons

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12
Q

What is oxidation?

A

Loss of electrons

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13
Q

Why is there a lamp in the circuit?

A

As it confirms electrical conductivity through a complete circuit

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14
Q

Why is there a cell?

A

A power supply is the source of electrical current

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15
Q

What is aqueous?

A

When a substance is dissolved in water to form a solution

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16
Q

What does it mean if the solution is an aqueous?

A

You need to factor the H2O into the equation

17
Q

What does water split under the current?

A

H+ and OH-

18
Q

What product will be formed at the cathode?

A

Will be the least reactive

19
Q

What happens if one of the negative ions are a halide at the anode?

A

The halide will be discharged

20
Q

What happens if there is no halides at the anode?

A

The hydroxide will be discharged to form O2

21
Q

What is left overall if you started with copper chlorine (aq) ?

A

Copper + chlorine + water

Chemistry (11 decks)

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