Polymers and Life Flashcards Preview

A-Level Chemistry OCR B > Polymers and Life > Flashcards

Flashcards in Polymers and Life Deck (12)
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1
Q

What is a zwitterion?

A

A dipolar ion with both positive and negative charge on each side of the molecule

2
Q

What observations can be made when reacting the following with carbonates:
carboxylic acids
phenols
alcohols

A

Carboxylic acids will fizz when reacted with carbonates as CO2 is formed
Phenols and alcohols are not acidic enough to react with carbonates, no observations will be made

3
Q

How do carboxylic acids, phenols and alcohols react with metals, what kind of reaction is this?

A

They all form salts in a redox reaction

4
Q

What reagents and conditions are used for esterification in what kind of reaction?

A

Esters are formed in a condensation reaction between carboxylic acids and alcohols using reflux with concentrated H2SO4/HCl

5
Q

What ester is formed when reacting ethanol and propanoic acid?

A

Ethyl propanoate

6
Q

What ester is formed when reacting phenol and benzoic acid?

A

Phenyl benzoate

7
Q

What reactants are used when producing a polyester?

A

Diol and dicarboxylic acid

8
Q

How are esters made from phenols?

A

-OH in phenols are less reactive than in alcohols so require acid anhydrides to form an ester

9
Q

How are lower primary amines named?

A

A prefix to amine is used, e.g. methylamine, propylamine

10
Q

How are higher amines named?

A

A prefix amino- is used, e.g. CH3CH(NH2)CH3 is 2-aminopropane

11
Q

Are amines soluble in polar solvents (water), why/why not?

A

Amines are soluble in polar solvents as lone pair of electrons on nitrogen can form hydrogen bonds with water

12
Q

Are amines acidic or basic? Why?

A

Amines are basic as the lone pair on the nitrogen can form dative bonds with an H+ ion, thus being a proton acceptor (base)