Question

18.
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.
Name the type of this reaction justifying your answer.​

Answer 1

Answer:

pls see the attached paper.

Explanation:

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Answer 2

Answer:

a. Lead iodide $(PbI_{2} )$ is the compound precipitated which is yellow in color. b. $Pb(NO_{3} )_{2} + 2KI$ → $PbI_{2} + 2KNO_{3}$ is the balanced reaction of type double displacement.

Explanation:

• In a double displacement reaction, there is an exchange of ions and two reactants react to form products.
• Double displacement reactions usually take place between ionic compounds that are soluble in water.

Solution Part a:

The compound precipitated is Lead iodide $(PbI_{2} )$. The color of the compound is yellow.

Solution Part b:

The balanced chemical equation is:

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

Double displacement reaction is the name given to this reaction. In this reaction, two new compounds are formed when two reactants are reacting by the exchange of ions. The negative ions are exchanged with the positive ions to form products.