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chemistry p2 > carboxylic acids > Flashcards

carboxylic acids Flashcards

1
Q

what is there functional group

A

-COOH

carboxyl group

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2
Q

List the first 4 carboxylic acids

A

methanoic acid
ethanoic acid
propanoic acid
butanoic acid

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3
Q

why are carboxylic acids described as weak acids?

A

All carboxylic acids are weak acids. Weak acids do not fully ionise in water. This means that weak acids don’t release all their hydrogen ions

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4
Q

carboxylic acid + metal carbonate=

A

salt + water + carbon dioxide

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5
Q

ethanoic acid + potassium carbonate=

A

potassium ethanoate + water + carbon dioxide

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6
Q

how are carboxylic acids made?

A

take an alcohol (butanol) and oxidise it using a oxidising agent which adds an oxygen resulting in ac carboxylic acid (butanoic acid)

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7
Q

what will butanoic acid ionise into (2 marks)

A

Butanoic acid will ionise into a butanoate ion and a hydrogen ion.

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8
Q

Finish the word equations

  1. Carboxylic acid + metal ➔
  2. Carboxylic acid + metal oxide ➔
  3. Carboxylic acid + metal hydroxide ➔
  4. Carboxylic acid + metal carbonate➔
A
  1. Carboxylic acid + metal ➔ salt + hydrogen
  2. Carboxylic acid + metal oxide ➔ salt + water
  3. Carboxylic acid + metal hydroxide ➔ salt + water
  4. Carboxylic acid + metal carbonate ➔ salt + water + carbon dioxide
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9
Q

What is the general formula for carboxylic acids?

A

CnH2n+1COOH

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10
Q

formula of methanoic acid

A

HCOOH

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11
Q

formula of ethanoic acid

A

CH3COOH

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12
Q

formula of propanoic acid

A

CH3CH2COOH

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13
Q

formula of butanoic acid

A

CH3CH2CH2COOH

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14
Q

Ethanoic acid + ethanol →

A

Ethanoic acid + ethanol → ethyl ethanoate + water

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15
Q

when carboxylic acids react with water what Ph do the dissolved solutions have

A

acidic

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16
Q

What is needed for carboxylic acids to react and produce esters?

A

Alcohol

Acid catalyst

chemistry p2 (41 decks)

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