Question

Write two observations when lead nitrate is heated in a test tube.
Write a balanced chemical equation to represent the above reaction.​

Answer 1

Explanation:

In mathematic equations we use an equal sign (=) for example 2 + 2 = 4, but in scientific chemical equations, we use an arrow (→), for example C + O2→ CO2. To the left of the arrow, we have the 'before' situation. This side represents the substances we have beforethe reaction takes place. They are called the reactants.

Given that lead nitrate, having chemical formula Pb(NO3)2 is heated in a test tube. The two observations of this chemical reaction are: (i) When lead nitrate is heated, it decomposes into lead oxide (PbO), nitrogen dioxide (NO2), and oxygen gas (O2). The type of this reaction is thermal decomposition reaction.