Question

When one mole of lead nitrate is heated then:
(A) 2 moles of NO2 gas are produced
(B) 1 moles of O2gas is produced
(C) both (A) and (B)
(D) 4 moles of NO2 gas are produced

Answer 1

Answer:

Explanation:

2Pb(NO3​)2​→2PbO+4NO2​+O2​

2 moles of Pb(NO3)2 produces 2 moles of PbO , 4 moles of NO2 and 1 mole O2.

when 1 mole of Pb(NO3)2 react it produces 1 mole of PbO , 2 moles of NO2 and half mole O2.

so option(A) is correct

Answer 2

Option (d) - 4 moles of $NO2$ gas are produced when one mole of lead nitrate is heated.

Explanation:

• When one mole of lead nitrate is heated then it undergoes decomposition to give lead oxide, nitrous oxide, and ozone
• $2Pb(NO3)2 ------- 2 PbO +4NO2 +O3$
• The molar mass  $Pb(NO3)2$  is such that nitrous oxide and ozone gas are released.
• When lead nitrate is heated it decomposes to form a lead oxide, nitrogen dioxide, and oxygen.
• The reaction takes place with the decomposition and leads to the formation of lead oxide.