Question

What do you observe when aqueous solution of lead mitrata is mixed with aqueous solution of potassium iodide? What is the reason behind your observation? ​

Answer 1

Answer:

When lead nitrate is mix with potassium iodine a precipitation reaction occur and yellow precipitate of lead iodide is formed.

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Answer 2

$\bf\huge{ Correct\:question: }$

What do you observe when an aqueous solution of lead nitrate is mixed with an aqueous solution of potassium iodide? What is the reason behind your observation?

$\bf\huge{Answer :}$

• When the aqueous solution of potassium iodide is added to the aqueous solution of lead nitrate, then a yellow precipitate of lead iodide is formed as a product.

Chemical equation -

$\bf{Pb(NO_3)_2\: (aq) + 2KI\: (aq) \longrightarrow PbI_2\: (s) + 2KNO_3 \:(aq)}$

• The above reaction is an example of double displacement and precipitation reaction.

$\bf\huge{ Additional \:information :}$

Displacement reaction :

A displacement reaction is a reaction in which more reactive elements displace less reactive elements and formed its compound as a product.

Types of displacement reaction -

1. Single displacement reaction
2. Double displacement reaction

Examples of Displacement reaction -

• $\bf{CuO\:(s) + Mg\: (s) \longrightarrow MgO \:(s) + Cu\: (s) }$

• $\bf{Fe\: (s) + 2HCL (aq) \longrightarrow FeCl_2 \:(aq) + H_2 \: (g)}$

Reactivity series-

• Potassium > Sodium > Calcium > Magnesium > Aluminium > Zinc > Iron > Tin > Lead > Hydrogen > Copper > Mercury > Silver > Gold.