Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.
The chemical formula of ammonium chloride is NH4Cl
Since ammonium chloride is the salt of a strong acid HCl and weak base NH4OH, so an aqueous solution of ammonium chloride is acidic in nature.
When dissolved in water it gets hydrolysed to some extent to form HCl and NH4OH. HCL being a strong acid is fully ionized and gives a large number of hydrogen ions whereas NH4OH is slightly ionised so NH4Cl solution contains more of hydrogen ions than hydroxide ions and is hence acidic in nature.