Question

3. About 2g of lead nitrate is heated in a boiling tube. Brown fumes were seen coming out of the
tube. Answer the following questions:
a. Identify the brown fumes.
b. What type of reaction is this?
c. Write the balanced chemical equation for the above reaction

Of Class 10

Answer 1

Answer:

The color of NO2 fumes is reddish brown. State of the color of the fumes evolved and the residue left: The colorless lead (II) nitrate crystals upon heating undergoes thermal decomposition and forms a yellow solid precipitate of lead oxide and evolves "reddish brown fumes" of nitrogen dioxide gas.

Answer 2

Explanation:

a) nitrogen di oxide

b) decomposition reaction