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
Exam No：0620_m24_qp_22 Year：2024 Question No：20
Answer:
C
Knowledge points:
8.4.1.1. have high densities
8.4.1.2. have high melting points
8.4.1.3. form coloured compounds
8.4.1.4. often act as catalysts as elements and in compounds
8.4.2. Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III)
Solution:
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