Decomposition Reaction of Lead Nitrate

The video tutorial demonstrates the decomposition of lead nitrate, a white powder, when heated in a test tube. Upon heating, it releases pungent brown fumes and leaves a brownish residue. The chemical reaction involves lead nitrate decomposing into lead monoxide, nitrogen dioxide (NO2), and oxygen gas. This process exemplifies a decomposition reaction.

What is the initial form of lead nitrate used in the experiment?

• A liquid solution

• A white powder

• A brown gas

• A solid block

What is observed when lead nitrate is heated over a flame?

• Brown fumes with a pungent smell are released

• It turns into a white gas

• It melts into a liquid

• It remains unchanged

What is the color of the residue left after heating lead nitrate?

• Brown

• Black

• White

• Green

Which gases are evolved during the decomposition of lead nitrate?

• Carbon dioxide and hydrogen

• Nitrogen dioxide and oxygen

• Sulfur dioxide and nitrogen

• Oxygen and hydrogen

What type of chemical reaction is demonstrated by the decomposition of lead nitrate?

• Single displacement reaction

• Decomposition reaction

• Double displacement reaction

• Synthesis reaction