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Core and Additional Chemistry > 2.7 Electrolysis > Flashcards

2.7 Electrolysis Flashcards

0
Q

What is the name that is given to the positive electrode?

A

Anode

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1
Q

Why can’t ionic solids conduct electricity?

A

Because the ions aren’t free to move

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2
Q

Which ions form at the cathode?

A

The least reactive ones

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3
Q

What does (aq) mean?

A

Aqueous solution

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4
Q

Is it oxidation or reduction when electrons are lost?

A

Oxidation

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5
Q

What is the solution or melt that is electrolysed called ?

A

Electrolyte

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6
Q

What does OIL RIG stand for?

A

Oxidation Is Loss Reduction Is Gain

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7
Q

The products formed during the electrolysis of sulfuric acid are?:

A

Hydrogen at the negative electrode and oxygen at the positive electrode.

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8
Q

Why does the solution have to be molten?

A

So it is easier to move

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9
Q

The acronym “OIL RIG” means what?

A

Oxidation Reduction
Is Is
Loss Gain

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10
Q

What is the balanced half-equation for the production of chlorine gas?

A

2Cl- → Cl2 + 2e-

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12
Q

What is OILRIG

A 
Oxidation
Is 
Loss
Reduction 
Is 
Gain
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12
Q

What is the definition of electrolysis?

A

If you pass an electric current through an ionic substance that’s molten or in solution. It breaks down into the elements it’s made of.

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13
Q

What does PANIC stand for?

A 
Positive
Anode
Negative 
Is 
Cathode
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14
Q

What is the positive electrode called

A

Anode

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15
Q

What is the negative electrode

A

Cathode

16
Q

What is an anode?

A

A positive electrode

17
Q

Why doesn’t solid copper chloride conduct electricity?

A

The ions can not move around when solid, it needs to be aqueous

18
Q

Was does the acronym OILRIG stand for?

A 
Oxidation
Is
Lost
Reduction
Is 
Gained
19
Q

Name one method of mining

A

Phytomining

Bioleaching

20
Q

What are ions?

A

Charged atoms

21
Q

Are non metals negative or positive ?

A

Negative

22
Q

Where do positive ions go?

A

The negative electrode

23
Q

Where do the negative ions go?

A

The positive electrode

24
Q

What happens to the positive electrode?

A

It is oxidised

25
Q

What is the name of the negative electrode?

A

Cathode

26
Q

Which ions are attracted towards the cathode?

A

Positive ions

27
Q

How does phytomining work?

A

Plants are grown on top of a source of copper compounds, which the plants absorbs with its roots: at the end of this process, the plants are burned to obtain the copper compounds.

Core and Additional Chemistry (14 decks)

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