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Chemistry OCR GCSE > C6.1 Improving Processes And Products > Flashcards

C6.1 Improving Processes And Products Flashcards

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1
Q

Process carried out to extract a metal from its ore

A

Reduction process

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2
Q

2 methods used to extract metals from ores

A

Reduction process with Carbon
Electrolysis

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3
Q

How is iron extracted from its ore

A

Blast furnace by reduction process

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4
Q

Catalyst used for contact process stage 2

A

Vanadium (V) oxide V2O5

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5
Q

What compound is made in stage 3 of the contact process

A

Oleum
H2S2O7

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6
Q

Compound found in malachite

A

Copper carbonate

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7
Q

Compound in bauxite

A

Aluminium oxide

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8
Q

Compound in haematite

A

Iron (III) oxide

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9
Q

Raw materials of the blast furnace

A

Iron ore
Coke
Limestone
Air

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10
Q

Chemical name for slag

A

Calcium silicate
CaSiO3

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11
Q

Main reducing agent in the blast furnace

A

Carbon monoxide

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12
Q

What is added to reduce the melting point of aluminium oxide during electrolysis

A

Molten Cryolite

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13
Q

Cathode in electrolysis of aluminium oxide

A

Graphite lining of the cell

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14
Q

Which electrode is aluminium formed at during electrolysis of aluminium oxide

A

Cathode

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15
Q

Gas released during electrolysis of aluminium oxide

A

Oxygen

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16
Q

Why anodes have to be replaced regularly in electrolysis of aluminium oxide

A

Oxygen reacts with the carbon rods making carbon dioxide

17
Q

Haber process

A

N2 + 3H2 ⇌ 2NH3

Nitrogen obtained from liquid air through distillation
Hydrogen obtained from natural gas (CH4) or electrolysis of water.

IRON CATALYST USED

18
Q

Contact process

A

Stage 1: S(s) + O2(g) -> SO2(g)
Stage 2: 2SO2(s) + O2(g) ⇌ 2SO3(g)
Stage 3: SO3(g) + H2SO4(aq) -> H2S2O7(l) Oleum
H2S2O7(l) + H2O(l) -> 2H2SO4(aq)

19
Q

Batch production and continuous process

A

Batch production = low production rate
Continuous process = high relative cost of equipment

Chemistry OCR GCSE (16 decks)

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