Question

According to the Arrhenius concept of acids and bases, the reaction below
cannot be regarded as a neutralization reaction. Explain HCl (g) + NH3(g) NH4(s)

Answer 1

An Arrhenius acid is any species that increases the concentration of $H^+$ or protons in an aqueous solution while an Arrhenius base is any species which increases the concentration of $OH^-$ in aqueous solution.

When an aqueous solution of HCl(an acid ) is made, it dissociates into $H^+$and $Cl^-$ . Consequently, an aqueous solution of $(NH_3)$ dissociated into $OH^-$ and ($NH^{4+})$ . The above equation results into a salt and water.

The above solution does not conform into Arrhenius theory since it is only limited to acid-base theory.