Question

please answer the question_____________
conduct an activity to show nitrogen dioxide is released by heating lead nitrate
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Answer 1

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Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen.

2Pb(NO3)2 = 2PbO + 4NO2 + O2.

NO2 is liberated, along with oxygen, as a reddish brown gas. The residue left is lead monoxide.

Answer 2

heat the compound lead nitrate
it decomposes to give a yellow residue i.e. lead monoxide and u will observe reddish brown fumes evolving out which is nitrogen dioxide along with a colourless gas oxygen which rekindles the glowing splinter....
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