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Question
What do you observe when Lead nitrate is heated.
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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