Question

Write a balanced equation for the reaction of Na₂S and CdSO₄. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter no reaction if no precipitate is formed.

Answer 1

Step-by-step explanation:

A chemical reaction equation that contains same number of atoms on both reactant and product side is known as a balanced chemical reaction equation.

For example,
`Na_(2)S(aq) + CdSO_(4)(aq) \rightarrow Na_(2)SO_(4)(aq) + CdS(s)`

Here, number of reactant molecules are as follows.

Na = 2

S = 2

Cd = 1

O = 4

Number of product molecules are as follows.

Na = 2

S = 2

Cd = 1

O = 4

As there are already equal number of atoms on both reactant and product side. Hence, the reaction equation is balanced.

Also, in this reaction both
`Na_(2)S` and
`CdSO_(4)` are present as aqueous solution. And, CdS is the precipitate that is formed as it is the insoluble solid that forms.

`Na_(2)SO_(4)` is present in aqueous state.