Explain Activity 1.2 Ncert Science class 10

Activity 1.2 Ncert Science Class 10 Chemical reactions and Equations.

Activity 1.2 lead nitrate with potassium iodide
A yellow precipitate of lead iodide.

Brief procedure: Activity 1.2 asks us to mix an aqueous solution of lead nitrate with potassium iodide to check what happens.

Observation: A yellow colour precipitate appears at the bottom.

Explanation: Lead nitrate and potassium iodide; both are colourless. They react with each other to form a yellow precipitate of lead iodide. Lead iodide settles down at the bottom of the tube.

Pb(NO3)2(aq)+ 2KI(aq) → PbI2(s) + 2KNO3(aq)

Dried precipitate of lead iodide
A dried precipitate of lead iodide

Next: Reaction of zinc with dilute acid. Activity 1.3.

See also:

Burning of Magnesium ribbon in the air Activity 1.1 

Solved questions and activities of chapter 1 Chemical reactions and equations.

 

 

 

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