Salts in order of growing pH of their 0.1 M aqueous solutions: NaHCO₃, , NaHSO₄ , Na2CO3, NH₄NO₃ .
To calculate the pH of an aqueous solution you want to recognize the attention of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].
Since the cation acts as weak, a salt with an anion of a strong acid and a cation of a susceptible base produces an acidic solution with a pH much less than 7.
In this case, the anion will become the spectator ion, while the weak acid dissociates in water and yields H3O+ ions.
Learn more about pH of salts here:
