Take about 2 g of lead nitrate in a boiling tube and heat it, what do you observe?

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Solution

Reaction: When lead nitrate ( $Pb {({NO}_{3})}_{2}$ ) is heated, it decomposes to produce lead oxide ( $PbO$ ), Nitrogen dioxide ( ${NO}_{2}$ ), and Oxygen ( $O_{2}$ ).
Chemical equation:
$2 Pb {({NO}_{3})}_{2} (s) \overset{∆}{\to} 2 PbO (s) + 4 {NO}_{2} (g) + O_{2} (g) Lead nitrate Lead oxide Nitrogen Oxygen dioxide$
3. Observation: The color of the nitrogen dioxide gas is reddish-brown. Hence, reddish-brown fumes are observed when lead nitrate is heated.

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