1. States of matter

1.1 Solids, liquids and gases

1.2 Diffusion

2. Atoms, elements and compounds

2.1 Elements, compounds and mixtures

2.2 Atomic structure and the Periodic Table

2.3 Isotopes

2.4 Ions and ionic bonds

2.5 Simple molecules and covalent bonds

2.6 Giant covalent structures

2.7 Metallic bonding

3. Stoichiometry

3.1 Formulae

3.2 Relative masses of atoms and molecules

3.3 The mole and the Avogadro constant

4. Electrochemistry

4.1 Electrolysis

4.2 Hydrogen–oxygen fuel cells

5. Chemical energetics

5.1 Exothermic and endothermic reactions

6. Chemical reactions

6.1 Physical and chemical changes

6.2 Rate of reaction

6.3 Reversible reactions and equilibrium

6.4 Redox

7. Acids, bases and salts

7.1 The characteristic properties of acids and bases

7.2 Oxides

7.3 Preparation of salts

8. The Periodic Table

8.1 Arrangement of elements

8.2 Group I properties

8.3 Group VII properties

8.4 Transition elements

8.5 Noble gases

9. Metals

9.1 Properties of metals

9.2 Uses of metals

9.3 Alloys and their properties

9.4 Reactivity series

9.5 Corrosion of metals

9.6 Extraction of metals

10. Chemistry of the environment

10.1 Water

10.2 Fertilisers

10.3 Air quality and climate

11. Organic chemistry

11.1 Formulae, functional groups and terminology

11.2 Naming organic compounds

11.3 Fuels

11.4 Alkanes

11.5 Alkenes

11.6 Alcohols

11.7 Carboxylic acids

11.8 Polymers

12. Experimental techniques and chemical analysis

12.1 Experimental design

12.2 Acid–base titrations

12.3 Chromatography

12.4 Separation and purification

12.5 Identification of ions and gases

IGCSE Chemistry 11.7 Carboxylic acids Question Bank

[Maximum number: 1]

Some symbol equations and word equations, A to J, are shown.

A $\mathrm{Fe}^{3+}+3 \mathrm{OH}^{-} \rightarrow \mathrm{Fe}(\mathrm{OH})_{3}$

B $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O}$

C ethane + chlorine → chloroethane + hydrogen chloride

D $\mathrm{C}_{12} \mathrm{H}_{26} \rightarrow \mathrm{C}_{8} \mathrm{H}_{18}+\mathrm{C}_{4} \mathrm{H}_{8}$

E ethene + steam → ethanol
F chlorine + aqueous potassium iodide → iodine + aqueous potassium chloride

G $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{CO}_{2}$

H ethanoic acid + ethanol → ethyl ethanoate + water
I calcium carbonate → calcium oxide + carbon dioxide

J $6 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{O}_{2}$

Use the equations to answer the questions that follow.
Each equation may be used once, more than once, or not at all.
Give the letter, A to J, for the equation that represents:

(a)

the formation of an ester [1]

[ 1 ]

(a)

The structures of five organic compounds, A, B, C, D and E, are shown.
Answer the questions that follow.
Each letter may be used once, more than once or not at all.
A

E
E

[ 1 ]

(i)

Give the letters of two compounds that can react with each other to form an ester. and

[ 1 ]

Which statements about aqueous ethanoic acid are correct?

1 It can be produced by oxidising ethanol with potassium iodide.
2 It reacts with magnesium to produce hydrogen gas.
3 It has an approximate pH value of 3 .
4 It produces esters called methanoates.
A 1 and 3
B 1 and 4
C 2 and 3
D 2 and 4

(a)

Ethanol can be oxidised to form ethanoic acid.

[ 1 ]

(i)

Name a suitable oxidising agent for this reaction.

[ 1 ]

(b)

Carboxylic acids react with alcohols to make esters.

The structure of an ester is shown.

Draw the structures of the carboxylic acid and alcohol from which this ester can be made. Give the names of the carboxylic acid and alcohol.
structure of the carboxylic acid
name of the carboxylic acid
structure of the alcohol
name of the alcohol

[ 4 ]

[Maximum number: 2]

Ethanol is made industrially by the reaction of ethene with steam. The reaction occurs at a temperature of $300^{\circ} \mathrm{C}$ and a pressure of 60 atmospheres.

\mathrm{C}_{2} \mathrm{H}_{4}(\mathrm{~g})+\mathrm{H}_{2} \mathrm{O}(\mathrm{~g}) \rightleftharpoons \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(\mathrm{~g})

A catalyst is used in this reaction.
The forward reaction is exothermic.

(a)

When alcohols react with carboxylic acids, esters are produced.

[ 2 ]

(i)

Give the name of the alcohol and the carboxylic acid that react together to produce ester X. alcohol
carboxylic acid

[ 2 ]

[Maximum number: 2]

This question is about ethanoic acid, $\mathrm{CH}_{3} \mathrm{COOH}$ .

(a)

Ethanoic acid reacts with methanol to form an ester.

[ 2 ]

(i)

State two conditions required for this reaction.

1

2

[ 2 ]

[Maximum number: 2]

Methanol is made industrially by reacting carbon monoxide with hydrogen. The gases react at a temperature of $250^{\circ} \mathrm{C}$ and a pressure of 75 atmospheres.

\mathrm{CO}(\mathrm{~g})+2 \mathrm{H}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{CH}_{3} \mathrm{OH}(\mathrm{~g})

The forward reaction is exothermic.

(a)

Alcohols react with carboxylic acids to produce esters.

[ 2 ]

(i)

Give the name of the carboxylic acid and the alcohol that react together to produce ester X. carboxylic acid alcohol

[ 2 ]

The structure of an ester is shown.

What are the names of the carboxylic acid and the alcohol that react together to form this ester?

[Maximum number: 1]

What is the structure of the ester formed from ethanoic acid and propanol?

Which statement about ethanol is not correct?
A Ethanol can be made by fermentation.
B Ethanol is oxidised to make ethanoic acid.
C Ethanol reacts with oxygen exothermically, making it a good fuel.
D Ethanol reacts with propanoic acid to make propyl ethanoate.

0 selected

Question 1

Question 1(c)

Question 1

Question 1(a)

Question 1(a)(v)

Question 20

Question 4

Question 4(c)

Question 4(c)(i)

Question 4(e)

Question 4

Question 4(d)

Question 4(d)(ii)

Question 4

Question 4(d)

Question 4(d)(i)

Question 4

Question 4(d)

Question 4(d)(ii)

Question 33

Question 33

Question 34