Question

Sodium bisulphate dissociates in aqueous solution forming hydronium ions even then its solution is not considered an acid. Explain.​

Answer 1

Here is your answer

Because though it is not an acid ,it is an acidic salt(salt formed by incomplete replacement of ionised hydrogen atoms of polybasic acid by basic radical i.e it is having H+ ion).here NaHCO3 isformedby:

NaCl+H2CO3=NaHCO3+HCl( rhis reaction takes place below 200 degree celsius).

so on dissaciation gives hydrogen ion (to be an acid it must liberate hydronium ion H30+ and not the H+).since NaHCO3 doesnt give H30+ ion it is not an acid but an acidic salt.

Answer 2

Sodium Hydrogen Sulphate - Fromula- NaHSO4

It is formed by reaction of Sodium Hydroxide and Sulphuricacid

[Neutralization reaction]:

NaOH  + H2SO4-----> NaHSO4 +H2O

Sodium Hydrogen Suplhate contains One of the Hydrogen Ion given by sulphuric acid , so it can donate H+ion to a strong base even though it is not as acid

The reaction is as followed;

NaHSO4 +NaOH-----> Na2SO4 + H2O

Conclusion :

Sodium Hydrogen Sulphate is not an acid but it dissolves in water to give hydrogen ions.