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Carbon Monoxide

On heating Pb...

Question

On heating $P b (N O_{3})_{2}$ a brown gas is evolved which undergoes dimerization on cooling. Identify the gas.

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Solution

On heating $P b (N O_{3})_{2}$ , $N O_{2}$ is evolved.

$2 P b (N O_{3})_{2} 673 K \to 4 N O_{2} + 2 P b O + O_{2}$
It is a highly poisonous gas and causes edema in the lungs which may result in death.

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