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In the reaction between lead nitrate solution and potassium iodide solution, what is observed?

Question
In the reaction between lead nitrate solution and potassium iodide solution, what is observed?
A colourless gas is released
A precipitate forms
The solution turns clear with no change
The mixture becomes hot only, with no precipitate
Answer
A precipitate forms
Detailed Explanation
Mixing lead nitrate and potassium iodide solutions produces a precipitate of lead iodide.
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