Design an activity to demonstrate the decomposition reaction of lead nitrate
Answers
The decomposition reaction of lead nitrate is given as follows:
heat
2Pb(NO3)2(s) ----------> 2PbO(s) + 4NO2(g)+ O2(g)
Lead nitrate( white solid) decomposes to produce lead oxide( PbO) which is a yellow solid, Nitrogen dioxide( NO2) which is a reddish brown gas and oxygen(O2).
This can be demostrated by the following activity:
A small amount of lead nitrate is taken in a dry test tube and heated over the flame( first gently, then strongly).
The colour of the gas evolved is observed which is reddish brown, and then a moist blue litmus paper is brought near it which turns red,thus confirming the acidic nature of the gas.
Also, a glowing splint is brought near the mouth of the test tube which is rekindled by the gas evolved, hence oxygen gas is produced.
At the bottom of the test tube remains a yellow solid residue, which is lead oxide.
Answer:
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Explanation:
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