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Question
What do you observe when Lead nitrate is heated.
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Solution
The pale yellow solid is lead monoxide, the reddish brown gas is nitrogen dioxide and the colourless gas is oxygen.
\[\ce{\underset{\text{lead nitrate}}{2Pb(NO3)2(s)} ->[heat]\underset{\text{lead monoxide}}{2PbO(s)} +\underset{\text{nitrogen dioxide}}{4NO2(g)} +\underset{\text{oxygen}}{O2(g)}}\]
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