Lead nitrate solution is added to a test tube containing potassium iodide solution.(a) Write the name and colour of the compound precipitated.(b) Write the balanced chemical equation for the reaction involved.(c) Name the type of this reaction justifying your answer.
Question
Lead nitrate solution is added to a test tube containing potassium iodide solution.(a) Write the name and colour of the compound precipitated.(b) Write the balanced chemical equation for the reaction involved.(c) Name the type of this reaction justifying your answer.
Solution
(a) The compound that is precipitated when lead nitrate solution is added to potassium iodide solution is Lead Iodide. The colour of Lead Iodide is bright yellow.
(b) The balanced chemical equation for the reaction is:
Pb(NO3)2 (aq) + 2KI (aq) -> PbI2 (s) + 2KNO3 (aq)
This equation indicates that one molecule of lead nitrate reacts with two molecules of potassium iodide to produce one molecule of lead iodide and two molecules of potassium nitrate.
(c) This reaction is a type of double displacement reaction or precipitation reaction. In this reaction, the ions of two compounds exchange places in an aqueous solution to form two new compounds. One of these new compounds is insoluble in water and precipitates out of the solution, hence the name precipitation reaction. The formation of a yellow precipitate of lead iodide confirms this.
Similar Questions
where you have mixed the solutions of lead(II) nitrateand potassium iodide.(i) What was the colour of the precipitate formed? Can you name the compoundprecipitated?(ii) Write the balanced chemical equation for this reaction.(iii) Is this also a double displacement reaction?
When a solution of potassium iodide is added to a solution of lead nitrate in a test tube. a reaction takesplace.
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?
lead(II) nitrate solution + sodium chloride solution → sodium ________ solution + lead(II) chloride precipitate
When lead nitrate reacts with potassium iodide, yellow precipitate ofPbI2 is formedKNO3 is formedPb(NO3)2 is formedPbIO3 is formed
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