Assertion: When crystals of lead nitrate is heated strongly in a dry testube, a yellow
residue is left with evolution of brown fumes, Reason: Due to the formation of lead and evolution of carbon dioxide gas.
a. If both the assertion and the reason are true and the reason is a corrent explanation
of the assertion.
b. If both the assertion and reason are true but the reason is not a correct explanationof the assertion.
c.If the assertion is true but the reason is false.
d.If both the assertion and reason are false.
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Answer:
A brown gas called nitrogen dioxide is evolved when lead nitrate crystals are is heated in a test tube according to the following chemical reaction
2 Pb(NO3)2 → 2 PbO + 4 NO2 + O2
In this reaction, oxidation and decomposition both occurs simultaneously.
Lead nitrate is an inorganic compound with the chemical formula Pb(NO3)2.
It commonly occurs as a colorless crystal or white powder and, unlike most other lead(II) salts, is soluble in wate
Explanation:
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