A cream precipitate is formed when silver nitrate is added. Which ion does this indicate the presence of?

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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 cream precipitate is formed when silver nitrate is added. Which ion does this indicate the presence of?

Explanation:
When a soluble salt containing silver ions meets a solution with halide ions, the silver forms an insoluble silver halide precipitate. The color of that precipitate tells you which halide is present. A cream-colored precipitate is characteristic of silver bromide, so the ion present is bromide. If it were chloride, you’d get a white precipitate; if it were iodide, a yellow precipitate. The nitrate ion wouldn’t produce a visible precipitate with silver ions.

When a soluble salt containing silver ions meets a solution with halide ions, the silver forms an insoluble silver halide precipitate. The color of that precipitate tells you which halide is present. A cream-colored precipitate is characteristic of silver bromide, so the ion present is bromide. If it were chloride, you’d get a white precipitate; if it were iodide, a yellow precipitate. The nitrate ion wouldn’t produce a visible precipitate with silver ions.

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