C9 Flashcards

1
Q

What is crude oil

A

A mixture of mant different compounds

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2
Q

Give the usuall examples of the compounds found in crude oil

A

Hydrocarbons(hydrogen and carbon)

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3
Q

How id crude oil seperated

A

Fractional distilation

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4
Q

Why do lighter fractions mkae better fuels?

A

As they ignite more easily and burn well

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5
Q

How can you test the gases formed in complete combusrion of a hydrocarbon

A
  • if carbon diocide is present it will turn the limewater cloudy
  • if watwer is present it will turn the bluye cobalt chloride paper pink
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6
Q

Give one product formed if an incomplete combustion of a hydrocarbon is made

A

Carbon monoxide

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7
Q

How can large hydrocarbon molecules be broken down into smaller molecules

A

By passing the vapours over a hot catalyst

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8
Q

What does cracking produce

A

Saturated hydrocarbons which is used as fuels

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