Question

List observations when the Iron is dipped in dilute Sulphuric acid.

Answer 1

When the Iron is dipped in dilute Sulphuric acid:

• The reaction between the Fe metal and Sulphuric acid is known as a displacement reaction.
• In this type of reaction stronger the more reactive metal or element displaces other elements from its compound.
• The general chemical reaction for this can be given as:

$\underset{\left(\mathrm{Iron}\right)}{\mathrm{Fe}\left(\mathrm{s}\right)}+\underset{(\mathrm{Sulphuric}\mathrm{acid})}{{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)}\to \underset{(\mathrm{Iron}\mathrm{sulfate})}{{\mathrm{FeSO}}_4\left(\mathrm{aq}\right)}+\underset{\left(\mathrm{Hydrogen}\right)}{{\mathrm{H}}_2\left(\mathrm{g}\right)}$

Observations:

• A green color solution will be formed due to the formation of Ferrous sulfate, $\mathrm{FeS}{\mathrm{O}}_4$ .
• The Iron part will react with Sulphuric acid to produce Hydrogen gas, which is a colorless and odorless gas.

Hence, the above mentioned are the observations when the Iron is dipped in dilute Sulphuric acid.