A yellow precipitate forms when silver nitrate is added. Which ion is present?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

A yellow precipitate forms when silver nitrate is added. Which ion is present?

Explanation:
When a solution containing halide ions is treated with silver Nitrate, silver halides form as precipitates and their colors reveal which halide is present. A yellow solid forms specifically from silver iodide, because AgI is insoluble and yellow. In contrast, silver chloride gives a white precipitate, and silver sulfate also yields a white precipitate, while nitrates generally stay in solution and don’t form a visible precipitate. So the appearance of a yellow precipitate points to iodide ions being present.

When a solution containing halide ions is treated with silver Nitrate, silver halides form as precipitates and their colors reveal which halide is present. A yellow solid forms specifically from silver iodide, because AgI is insoluble and yellow. In contrast, silver chloride gives a white precipitate, and silver sulfate also yields a white precipitate, while nitrates generally stay in solution and don’t form a visible precipitate. So the appearance of a yellow precipitate points to iodide ions being present.

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