Question

Rishu take about 2 g of lead nitrate powder in
boiling tube Hold the boiling tube with a pair of
tongs and heat it over a flame as shown in figure.
She observed some brown fumes are coming
from test tube and some residue left in test tube.
a)what type of reaction take place in test tube​

Answer 1

Explanation:

Upon heating lead nitrate strongly, it decomposes with a crackling sound and a precipitate of lead oxide is formed along with the release of oxygen and nitrogen dioxide gas. The oxygen liberated can be tested by introducing a glowing splint near the boiling tube.