Question detail
What is the observation when sulfate ions are tested with barium chloride solution?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Identification of ions by chemical and spectroscopic means
Question
What is the observation when sulfate ions are tested with barium chloride solution?
Answer
A high-scoring answer should explain recall that sulfate ions produce a white precipitate of barium sulfate. Use method first, observation second, conclusion last: name the relevant test or measurement, state the observation, and then connect the result to Sulfate ions.
Explanation
This is correct because barium chloride after acidifying is the evidence expected for sulfate ion, and white precipitate is the result that supports the conclusion. A complete answer should use the approved objective wording, include the relevant evidence, and avoid unsupported identification claims.
Common mistake
Common Mistake in Sulfate Ion Tests
Students often confuse the white precipitate of barium sulfate with other white precipitates, such as those from carbonate or chloride tests.
Correct this by using the approved Sulfate ions context: Recall that sulfate ions produce a white precipitate of barium sulfate. Name the correct test or chemistry idea, state the observation accurately, and then give the conclusion supported by that evidence. Do not swap gas tests, flame tests, cation tests, anion tests, chromatography terms, pure substances, and formulations.
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