Question detail
Which halide ion produces a yellow precipitate when reacted with silver nitrate?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Group 7(17), the halogens
Question
- A. Fluoride ion
- B. Chloride ion
- C. Bromide ion
- D. Iodide ion
Answer
Iodide ion
Explanation
The iodide ion reacts with silver nitrate to form a yellow precipitate of silver iodide, distinguishing it from other halides.
Common mistake
Common Mistake in Halide Ion Tests
Students often confuse the test for halide ions with the test for other ions, leading to incorrect observations and conclusions.
To correctly test for halide ions, use silver nitrate solution. The reaction is: AgNO3 + NaCl → AgCl (precipitate) + NaNO3. When silver nitrate is added to a solution containing halide ions, a white precipitate of silver chloride forms if chloride ions are present. Ensure to follow this procedure to avoid confusion.
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