II2 SO4(I), II3 PO4(II) and IIClO4 (III) in decreasing order of acidic naturc. (1) I > III > II

step 1 Dear students, in problem 5 of chapter 7 we have asked that arrange H2 S .O4 first, H3P of 4 sec

II2 SO4(I), II3 PO4(II) and IIClO4 (III) in decreasing order...

\Lambdarrange $\mathrm{II}_{2} \mathrm{SO}_{4}(\mathrm{I}), \mathrm{II}_{3} \mathrm{PO}_{4}(\mathrm{II})$ and $\mathrm{IIClO}_{4}$ (III) in decreasing order of acidic naturc. (1) I > III > II (2) $\mathrm{I}>\mathrm{II}>\mathrm{III}$ (3) III $>\mathrm{II}>\mathrm{I}$ (4) $\mathrm{III}>\mathrm{I}>\mathrm{II}$

\Lambdarrange $\mathrm{II}_{2} \mathrm{SO}_{4}(\mathrm{I}), \mathrm{II}_{3} \mathrm{PO}_{4}(\mathrm{II})$ and $\mathrm{IIClO}_{4}$ (III) in
decreasing order of acidic naturc.
(1) I > III > II
(2) $\mathrm{I}>\mathrm{II}>\mathrm{III}$
(3) III $>\mathrm{II}>\mathrm{I}$
(4) $\mathrm{III}>\mathrm{I}>\mathrm{II}$

Key Concepts

Effect of Stoichiometry on Salt Acidity

The ratio of metal ions to anions in a salt influences its overall acidity. A higher proportion of a metal cation that undergoes hydrolysis can lead to a more acidic solution. Thus, understanding the stoichiometric relationships in salts is important for predicting and comparing their acid–base properties.

Acid?Base Behavior of Salts

This concept explains how salts, when dissolved in water, can produce acidic, basic, or neutral solutions. The nature of the solution is determined by the tendency of the cation and/or the anion to react with water (hydrolyze), yielding either H+ or OH– ions. Understanding this concept is crucial when comparing salts based on their ability to affect the pH of an aqueous solution.

Hydrolysis of Metal Cations

Metal cations, especially those with higher charge densities such as divalent or trivalent ions, can polarize water molecules leading to the formation of hydronium ions. This process, known as hydrolysis, is a key factor in determining the acidic nature of certain salts. The degree of hydrolysis depends on the charge and size of the cation as well as its coordination environment.

Role of Conjugate Acids and Bases

When a salt is derived from a weak acid or a weak base, its ions can react with water to shift the pH toward acidic or basic values. In salts where the anion is the conjugate base of a strong acid, the anion is typically inert, meaning the metal cation’s hydrolysis predominantly governs the acidic behavior of the salt.

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