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(i) What is observed when a solution of ...

(i) What is observed when a solution of potassium iodide to a solution of lead nitrate taken in a test tube ?
(ii) What type of reaction is this ?
(iii) Write a balanced equation to represent the above reaction.

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(i) A yellow precipitate of lead iodide appears at the bottom of the test tube.
(ii) It is an example of double displacement reaction.
(iii) The balanced equation for the reaction is :
`Pb(NO_(3))_(2)(aq) + 2KI(aq) to underset("(Yellow ppt.)")(PbI_(2)(s)) + 2KNO_(3)(aq)`
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