Chemistry · May / June 2022 · Paper 41 · Question 5
0620
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The question as text
Ethanoic acid is manufactured by the reaction of methanol with carbon monoxide. An equilibrium mixture is produced. CH3OH(g) + CO(g) CH3COOH(g)
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5(a)[2]
the rate of forward reaction equals the rate of the reverse reaction (1)
concentrations of reactants and products are constant (1)
5(b)[2]
reaction too slow (1)
yield of ethanoic acid too low (1)
5(c)[3]
increases (1)
decreases (1)
decreases (1)
5(d)[2]
cobalt (1)
transition element (1)
5(e)[1]
CnH2n+1COOH
5(f)[2]
COOH fully displayed (1)
whole molecule completely correct (1)
5(g)(i)[1]
methyl butanoate
5(g)(ii)[2]
butanoic acid (1)
methanol (1)
5(h)[3]
C 48.65 / 12
H 8.11 / 1
O 43.24 / 16
OR
4.05:8.11:2.70 (1)
fractions shown dividing all by smallest
OR
1.5:3:1
OR
3:6:2 (1)
C3H6O2 (1)
5(i)[1]
C4H8O2
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