Question

The correct order of acidic strength is

• A. $K_2O > CaO > MgO$
• B. $CO_2 > N_2O_5 > SO_3$
• C. $Na_2O > MgO > Al_2O_3$
• D. $Cl_2O_7 > SO_2 > P_4O_{10}$

Answer 1

Answer: (D)

$Cl_2O_7 > SO_2 > P_4O_{10}$

Answer 2

The correct order of acidic strength is****Cl2 ​ O7 ​ > _SO2 >P_4 ​ _O 10_​

For****non-metallic oxides, acidic strength increases along the periodic table.

The correct order of acidic strength is based on the ability of the compounds to release protons (H+) in an aqueous solution.

1. Cl2O7 (dichlorine heptoxide) is the strongest acid among the three. This is because it can readily release two H+ ions when dissolved in water, leading to the formation of two HClO4 molecules.
2. SO2 (sulfur dioxide) is the next strongest acid as it can release one H+ ion in an aqueous solution, forming H2SO3.
3. P4O10 (tetra phosphorus decaoxide) is the weakest acid among the three. It reacts with water to form phosphoric acid (H3PO4) but releases fewer H+ ions compared to Cl2O7 and SO2.

Hence, the correct order of acidic strength is Cl2O7 > SO2 > P4O10.

Therefore, the correct answer is option D.

Discover More Topics From Chapter:Group 15 Elements