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Chemistry > Alcohols > Flashcards

Alcohols Flashcards

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1
Q

General formula for an Alcohol

A

Cn+H2n+1OH

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2
Q

What type of intermolecular forces do alcohols have?

A

Hydrogen bonding

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3
Q

Are alcohols soluble in water?

A

Yes but longer chain lengths are insoluble as the C-H bond is non polar

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4
Q

What makes a alcohol secondary?

A

The C-OH bond has two other C-C bonds

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5
Q

How is ethanol made from crude oil?

A

Hydration of ethene

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6
Q

Advantages of Hydration of Ethene

A

Fast and continuous

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7
Q

Disadvantages of Hydration of ethene

A

Made from crude oil - non renewable

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8
Q

Equation of fermentation

A

C6H12O6-> 2C2H5OH + 2CO2 With yeast

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9
Q

conditions needed for hydration of ethene

A

Catalyst of yeast at 35 degrees in anaerobic conditions

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10
Q

Advantages of fermentation

A

Renewable as its made from sugar cane

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11
Q

Disadvantages of fermentation

A

Slow and batched process

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12
Q

How can using ethanol in car engines be carbon neutral?

A

Carbon dioxide released in fermentation and combustion but absorbed when growing sugar cane

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13
Q

Why is it not totally carbon neutral when using ethanol?

A

Transport of resources

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14
Q

Whats made from a primary alcohol - partially oxidised?

A

An aldehyde

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15
Q

Whats made from a primary alcohol - fully oxidised?

A

Carboxylic acid

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16
Q

What’s needed to oxidise a alcohol?

A

PDC - potassium dichromate

17
Q

Whats made from a secondary alcohol?

A

Ketone

18
Q

Why cant a tertiary alcohol be oxidised?

A

A c-c bond would need to break

19
Q

Whats made from a tertiary alcohol?

A

Not allowed fam

20
Q

What’s an aldehyde?

A

A C double bonded to a O on the end of a carbon chain

21
Q

Whats a ketone?

A

A C double bonded to a O in the middle of a carbon chain

22
Q

Whats a carboxylic acid?

A

COOH

23
Q

What does Tollens test for? And what’s a pos result?

A

Test for aldehyde and turns to a silver mirror

Chemistry (22 decks)

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