Haber Cycle- Unit 10 Triple only Flashcards by Mr Hirst | Brainscape

Q

Word Equation for ammonia

A

Hydorgen + Nitrogen Ammonia

can’t do reversible reaction signs

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Q

Symbol Equation for ammonia

A

N2 (g) + 3 H2 (g) 2 NH3

Can’t do reversible reaction signs

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Q

Sources of nitrogen

A

N2 from the air

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Q

Source of hydrogen

A

Natural Gas

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Q

Temperature for reaction

A

450 Degree

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Q

Pressure of reaction

A

200 atmosphere

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Q

Catalyst used

A

Iron

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Q

Closed system

A

no substances can enter or leave the system

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Q

Dynamic equilibirum

A

Reactions go forward and backwards

At the same rate

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Q

Effect of increasing pressure

A

Moves to side with least gases

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Q

Effect of increasing temperature

A

Moves to endothermic direction

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Q

Why is it at 450 Degrees?

A

Lower temperatures give better yield but too slow

Compromise

Decent yield at a decent rate

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Q

Why is it at 200 atm?

A

Increases the rate

Compromise

High pressure increases cost

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Q

How are costs reduced?

A

Unreacted nitrogen and hydrogen are recycled

Catalyst speeds up rate but is cheap

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