Question

When potassium iodide solution is added to a solution of lead nitrate in a test tube, a precipitate is formed.
(i) What is the colour of this precipitate?
(ii) Name the compound precipitated?
(iii) Write a balanced chemical equation for this reaction?
(iv) What type of reaction is this?

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Answer 1

Answer:

1) The colour of this precipitate formed is yellow

2)  The compound precipited is lead iodied.

3)$KI + Pb(NO_{3} )_{2}$ ⇒$PbI_{2} + KNO_{3}$

4) It is double displacement or precipitation reaction

Answer 2

Answer:

(i) A yellow coloured precipitate is formed.

(ii) Lead Iodide ( PbI2) Compound is precipitated.

(iii) Pb(NO3)2 + 2KI ⇒ 2KNO3 + PbI2.

(iv) This reaction is an example of both double displacement reaction and precipitation reaction.