Activity 1.2 Ncert Science Class 10 Chemical reactions and Equations.
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)