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Chemical equilibrium

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Question 10

An equilibrium system for the esterification of ethanoic acid is established in a closed vessel:

CH3COOH(l)+C2H5OH(l)⇌CH3COOC2H5(l)+H2O(l) \text{CH}_3\text{COOH}(l) + \text{C}_2\text{H}_5\text{OH}(l) \rightleftharpoons \text{CH}_3\text{COOC}_2\text{H}_5(l) + \text{H}_2\text{O}(l) CH3​COOH(l)+C2​H5​OH(l)⇌CH3​COOC2​H5​(l)+H2​O(l)

Different initial amounts of ethanoic acid (CH3COOH\text{CH}_3\text{COOH}CH3​COOH), ethanol (C2H5OH\text{C}_2\text{H}_5\text{OH}C2​H5​OH), ethyl ethanoate (CH3COOC2H5\text{CH}_3\text{COOC}_2\text{H}_5CH3​COOC2​H5​), and water (H2O\text{H}_2\text{O}H2​O) are added to four identical containers of the same volume, as shown in the table below.

ContainerCH3COOH\text{CH}_3\text{COOH}CH3​COOH / molC2H5OH\text{C}_2\text{H}_5\text{OH}C2​H5​OH / molCH3COOC2H5\text{CH}_3\text{COOC}_2\text{H}_5CH3​COOC2​H5​ / molH2O\text{H}_2\text{O}H2​O / mol
A2.02.02.00.0
B0.02.02.02.0
C2.00.02.02.0
D2.02.00.00.0

Which container would have the largest concentration of ethanol (C2H5OH\text{C}_2\text{H}_5\text{OH}C2​H5​OH) at equilibrium?

Container A

Container B

Container C

Container D

Chemical equilibrium Questions

  1. A Level
  2. /Chemistry
  3. /Chemical equilibrium