Experiment: Dilute sulfuric acid was added to barium chloride solution.Observation: A white insoluble solid formed immediately.Question: What reaction occurred?
Correct answer: B. Formation of barium sulfate as a precipitate.
- A. Neutralization of acid and base.
- B. Formation of barium sulfate as a precipitate.
- C. Formation of hydrochloric acid.
- D. Combustion of sulfur compounds.
Explanation
The correct answer is the formation of barium sulfate as a precipitate. In this reaction, sulfuric acid reacts with barium chloride to form barium sulfate, which is insoluble and appears as a white solid. The other options are incorrect because they do not align with the observed formation of a precipitate in the experiment.
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About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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