Final answer:
If the barium sulfate precipitate and filter paper are overheated, BaO may form, leading to incorrect measurement of barium in the sample.
Step-by-step explanation:
If the barium sulfate precipitate and filter paper are accidentally overheated in the crucible, it is possible that BaO might be formed. This is because barium sulfate (BaSO4) can decompose at high temperatures, forming BaO and releasing sulfur dioxide gas (SO2). BaO is a different compound than BaSO4, so if BaO is formed, it would affect the results of the experiment.
The formation of BaO would lead to an incorrect measurement of the amount of barium present in the original sample. This is because the mass of BaO would be greater than the mass of BaSO4. Therefore, the calculated percentage of barium in the sample would be higher than the actual percentage.
To avoid the formation of BaO, it is important to carefully control the temperature during the heating process. The crucible should be heated gently and gradually to prevent excessive heat that may cause decomposition of the barium sulfate precipitate.
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