Question

Consider the following thermal decomposition reaction where lead nitrate is heated over a flame.Pb(NO3)2 Heat→ ? The white powder turns yellow and brown fumes are released. Write the balanced chemical equation.

1 point

2Pb(NO3)2 Heat→ 2PbO+4NO2+O2

2Pb(NO2)2 Heat→ 2PbO+4NO2+O2

Pb(NO3)2 Heat→ 2PbO+4NO2+O2

Pb(NO3)2 Heat→ PbO+2NO2+O2

​

Answer 1

Explanation:

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

Answer 2

Answer:

The Balanced equation:

2Pb(NO3)2 Heat→ 2PbO+4NO2+O2

Explanation:

• Thermal decomposition reaction is a reaction in which compounds break down by heat to form two or more simple compounds.

• When Lead nitrate [Pb(NO3)2] is heated over flame, it breaks down and gives Lead monoxide [PbO], Nitrogen dioxide [NO2] and Oxygen [O2].

• The chemical reaction is as follows:

2Pb(NO3)2 Heat→ 2PbO+4NO2+O2

• Here, Pb(NO3)2 has white color which after heating turns to the yellow color because of PbO, brown fumes are because of NO2 and O2 is colourless gas.

#SPJ3