Which of the following gas is released when lead nitrate is heated strongly in a hard glass test tube?

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O_{2}

N_{2}

{CO}_{2}

H_{2}

answer is A.

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Detailed Solution

Oxygen gas

O_{2}

is released when lead nitrate is heated strongly in a hard glass test tube.
When lead nitrate (

{2 Pb (NO}_{3})_{2}

) is heated strongly in a hard glass test tube, then lead oxide (

PbO

) is formed along with nitrogen dioxide (

{4 NO}_{2}

) and oxygen (

O_{2}

) gas. As a result, a decomposition reaction has occurred. Hence, oxygen gas is released when lead nitrate is heated strongly in a hard glass test tube.

{2 Pb (NO}_{3})_{2} \to 2 PbO + {4 NO}_{2} + O_{2}

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