Aqueous silver nitrate is added to a solution of potassium iodide. Aqueous ammonia is then added. What would be observed? A A cream precipitate that dissolves on addition of aqueous ammonia B A cream precipitate that does not dissolve on addition of aqueous ammonia C A yellow precipitate that dissolves on addition of aqueous ammonia D A yellow precipitate that does not dissolve on addition of aqueous ammonia

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Aqueous silver nitrate is added to a solution of potassium iodide - CIE - A-Level Chemistry - Question 16 - 2018 - Paper 1

Question 16

Aqueous silver nitrate is added to a solution of potassium iodide. Aqueous ammonia is then added. What would be observed? A A cream precipitate that dissolves on add... show full transcript

Worked Solution & Example Answer:Aqueous silver nitrate is added to a solution of potassium iodide - CIE - A-Level Chemistry - Question 16 - 2018 - Paper 1

Step 1

A cream precipitate that dissolves on addition of aqueous ammonia

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Answer

This option is incorrect. While silver iodide (AgI) does form a precipitate when silver nitrate is added to potassium iodide, it does not dissolve in aqueous ammonia.

Step 2

A cream precipitate that does not dissolve on addition of aqueous ammonia

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Answer

This option is incorrect. The precipitate formed is not cream; it is actually yellow. Moreover, it does dissolve in ammonia because this option pertains to the wrong color.

Step 3

A yellow precipitate that dissolves on addition of aqueous ammonia

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Answer

This option is also incorrect. The yellow precipitate formed is generally a representation of the silver iodide. However, upon addition of ammonia, silver iodide does not dissolve.

Step 4

A yellow precipitate that does not dissolve on addition of aqueous ammonia

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Answer

This is the correct observation. When silver nitrate is added to potassium iodide, a yellow precipitate of silver iodide forms, which does not dissolve upon the addition of aqueous ammonia.

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Aqueous silver nitrate is added to a solution of potassium iodide - CIE - A-Level Chemistry - Question 16 - 2018 - Paper 1

Worked Solution & Example Answer:Aqueous silver nitrate is added to a solution of potassium iodide - CIE - A-Level Chemistry - Question 16 - 2018 - Paper 1

A cream precipitate that dissolves on addition of aqueous ammonia

A cream precipitate that does not dissolve on addition of aqueous ammonia

A yellow precipitate that dissolves on addition of aqueous ammonia

A yellow precipitate that does not dissolve on addition of aqueous ammonia

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