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  • (a) Design an activity to demonstrate the decomposition reaction of lead nitrate. (b) Draw labelled diagram of the experimental set-up. List two main observations. (c) Write balanced chemical equation for the reaction stating the ph

(a) Design an activity to demonstrate the decomposition reaction of lead nitrate.

(b) Draw labelled diagram of the experimental set-up. List two main observations.

(c) Write balanced chemical equation for the reaction stating the physical state of the reactant and the products.

 

 

 

 
 
 
 
 

Answers (1)

Activity to demonstrate the decomposition reaction of lead nitrate Pb(NO_{3})_{2}

(a) Take about 2 g of lead nitrate powder in boiling tube Hold the boiling tube with a pair of tangs and heat it over a flame as shown in figure.

(b) Two main observations :

    1. The emission of brown fumes of NO_{2} after thermal decomposition of 

        Pb(NO_{3})_{2} 

    2. The colourless compound Pb(NO_{3})_{2} forms a yellow compound 

        PbO and brown fumes of NO_{2} gas.

(c)

     2Pb \underset{(s)}{(NO_{3})_{2}}\overset{\Delta }{\rightarrow}\underset{(s)}{2PbO}+\underset{(g)}{4NO_{2}}+\underset{(g)}{O_{2}}

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Sumit Saini

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