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cracking Flashcards

(5 cards)

1
Q

what is cracking?

A

splitting up long chain hydrocarbons

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2
Q

what type of reaction is cracking?

A

Cracking is a thermal decomposition reaction. This means the molecules are broken down by heating them

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2
Q

what does cracking also make?

A

Alkenes. They are more reactive then alkanes

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3
Q

describe the process of steam cracking

A

Long chain hydrocarbons are heated
The hydrocarbon vapour is mixed with steam
They then are heated to a very high temperature which splits them into smaller molecules.

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4
Q

describe catalytic cracking

A

Long chain hydrocarbons are heated to turn them into a gas
The vapour is passed over a hot aluminium oxide catalyst
The long chain molecules split apart

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