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Two flasks, A and B, were placed in a water bath at 40°C - Scottish Highers Chemistry - Question 13 - 2023
Question 13
Two flasks, A and B, were placed in a water bath at 40°C. After several days, the contents of the flasks were analysed. Which results would be expected? A Flask ... show full transcript
Worked Solution & Example Answer:Two flasks, A and B, were placed in a water bath at 40°C - Scottish Highers Chemistry - Question 13 - 2023
Step 1
Which results would be expected?
Answer
To determine the expected results in flasks A and B, we first consider the contents of each flask and the interaction between the substances.
Flask A contains ethanol and ethanoic acid, while flask B contains ethyl ethanoate and water. At 40°C, these mixtures will undergo some degree of mixing due to their miscibility. Over time, we can expect the following:
- Ethanol and ethanoic acid can react to form ethyl ethanoate through an equilibrium process. This implies that flask A will likely see an increase in the amount of ethyl ethanoate.
- Flask B, which already contains ethyl ethanoate, may not change significantly in content as it is a stable entity in the presence of water already present.
Based on these interactions, the correct conclusion is that:
Option D is expected: "Flask A and flask B contain ethyl ethanoate, water, ethanol and ethanoic acid." This reflects the expected state after reaching equilibrium in the mixture.