Which statements about dilute ethanoic acid are correct?

A.
1 and 3
B.
1 and 4
C.
2 and 3
D.
2 and 4
Chemistry
IGCSE&ALevel
CAIE
Exam No:0620_w24_qp_11 Year:2024 Question No:17

Answer:

C

Knowledge points:

11.7.1.1. metals
11.7.1.2. bases
11.7.1.3. carbonates including names and formulae of the salts produced
11.7.2.1. with acidified aqueous potassium manganate(VII)
11.7.2.2. by bacterial oxidation during vinegar production
11.7.3. Describe the reaction of a carboxylic acid with an alcohol using an acid catalyst to form an ester
7.1.1.1. metals
7.1.1.2. bases
7.1.1.3. carbonates
7.1.10. Define a strong acid as an acid that is completely dissociated in aqueous solution and a weak acid as an acid that is partially dissociated in aqueous solution
7.1.11. State that hydrochloric acid is a strong acid, as shown by the symbol equation,
7.1.12. State that ethanoic acid is a weak acid, as shown by the symbol equation
7.1.2.1. litmus
7.1.2.2. thymolphthalein
7.1.2.3. methyl orange
7.1.3. State that bases are oxides or hydroxides of metals and that alkalis are soluble bases
7.1.4.1. acids
7.1.4.2. ammonium salts
7.1.5.1. litmus
7.1.5.2. thymolphthalein
7.1.5.3. methyl orange
7.1.6. State that aqueous solutions of acids contain
7.1.7. Describe how to compare hydrogen ion concentration, neutrality, relative acidity and relative alkalinity in terms of colour and pH using universal indicator paper
7.1.8. Describe the neutralisation reaction between an acid and an alkali to produce water
7.1.9. Define acids as proton donors and bases as proton acceptors

Solution:

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