Higher Chemistry - Esters/Fats/Oils/Soaps

Which of the following is the salt of a long-chain fatty acid?

• Fat

• Oil

• Soap

• Glycerol

Oils contain carbon to carbon double bonds which can undergo addition reactions with iodine. The iodine number of an oil is the mass of iodine in grams that will react with 100 g of oil. Which line in the table shows the oil that is likely to have the lowest melting point?

• A

• B

• C

• D

When an oil is hydrolysed, which of the following molecules is always produced?

• A

• B

• C

• D

The following molecules give flavour to food. Which of the following flavour molecules would be most likely to be retained in the food when the food is cooked in water?

• A

• B

• C

• D

vegetable oil --> vegetable fat

Which of the following reactions brings about the above change?

• Hydrolysis

• Condensation

• Hydrogenation

• Dehydrogenation

Which of the following fatty acids is the most unsaturated?

• C₁₅H₂₉COOH

• C₁₅H₃₁COOH

• C₁₇H₃₁COOH

• C₁₇H₃₅COOH

Which of the following is an isomer of ethyl propanoate (CH₃CH₂COOCH₂CH₃)?

• Methyl propanoate

• Pentan-2-one

• Pentanoic acid

What is the systematic name for the compound shown?

• 2,2,2-trimethylethanol

• 2,2-dimethylpropan-1-ol

• 2,2-dimethylpropan-3-ol

• 2,2-dimethylpentan-1-ol

Which of the following compounds is a tertiary alcohol?

• 2,2-dimethylpropan-1-o

• 2-methylbutan-2-ol

• pentan-3-ol

• 3-methylbutan-2-ol

The structure of pivalic acid is shown. Which of the following is the correct systematic name of pivalic acid?

• pentanoic acid

• 2,2,2-trimethylethanoic acid

• 2-ethylpropanoic acid

• 2,2-dimethylpropanoic acid