Alcohols : Questions - Glenalmond Chemistry

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Alcohols : Questions

Name _________

1.

Draw an example of

(a) A primary alcohol

(b) A secondary alcohol

(c) A tertiary alcohol

2.

Name the tertiary alcohol you drew in 1(c)

3.

Draw the structure of 2-methyl pentan-1-ol

4.

Define oxidation in terms of oxygen and hydrogen

5.

Draw the structure of

(a) Ethanal

(b) Ethanoic acid

(c) Propanone

(d) 3-methyl pentan-2-one

6.

Write an equation for the combustion of ethanol in plenty oxygen

7.

Name and draw the product of the full oxidation of propan-1-ol

8.

(a) The intermediate product of the oxidation of Q.7 is propanal.

Draw this compound and describe how you could make and isolate propanal.

(b) The oxidising agent you would use is potassium dichromate,

K

2

Cr

2

O

7

. Explain, in terms of oxidation number, how this acts as an oxidising agent

(c) What colour change occurs in the reaction?

9.

Name and draw the products (if any) of full oxidation of the following alcohols

(a) butan-2-ol

(b) methanol

(b) 2-methyl propan-2-ol

10.

Draw a structural formula for the compound which

(a) Can be oxidised to ethanoic acid

(b) Can be oxidised to 2-methyl propanoic acid

(c) is formed by the oxidation of propan-2-ol

(d) is formed by the oxidation of 2-methyl butan-1-ol

11.

An alcohol, X, on mild oxidation, gives a compound Y, of molecular mass 72. Compound Y cannot be oxidised further.

(a) Draw structural formulae for X and Y

(b) Give the name for alcohol X

(c) Is X primary, secondary or tertiary?

12.

(a) Describe the test for the –OH group (what you add and what you see)

(b) Name two compounds from different homologous series that would give a positive result for this test

(c) Write an equation for the reaction occurring in this test with propan-1-ol

13.

(a) What haloalkane product is formed in the reaction between butan-1-ol and sodium bromide and conc. Sulphuric acid?

(b) Describe how the Br

-

ion is acting as a reducing agent in its reaction with the conc. H

2

SO

4

(Unit 1.7 revision!)

14.

Describe how you would replace the –OH group of propan-1-ol with iodine

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