Question

If an acid is made from the anion SO42-, what would it's formula be?

a. H2SO4
b. H3SO4
c. HSO4
d. H2SO3

Answer 1

Answer: The chemical formula of the compound formed is
`H_2SO_4`

Step-by-step explanation:

Acids are defined as the chemical species which donate hydrogen ions when dissolved in water.

`HA(aq.)\rightarrow H^+(aq.)+A^-(aq.)`

Ionic compound is formed by the complete transfer of electrons from 1 atom to another atom. The cation is formed by the loss of electrons by metals and anions are formed by gain of electrons by non metals.

We are given:

An anion having chemical formula
`SO_4^(2-)` named as sulfate ion

This will combine with 2 hydrogen ions to form a neutral compound. The neutral compound formed is sulfuric acid.

Hence, the chemical formula of the compound formed is
`H_2SO_4`