Which is the strongest acid in the following ?

Options

A. `HCIO_(3)`
B. `HCIO_(4)`
C. `H_(2)SO_(3)`
D. `H_(2)SO_(4)`

Answer

2

Explanation

For the oxyacids the greater the number of highly electronegative `O` atoms in the molecules the more the electron density is pulled away form the `H` atoms (in`O-H` bond) and the weaker the `H-O` bond. As a result an acid with numerous oxygen atoms is more easily ionized and hence stronger. Aternnative ,the higher th eoxidation number of the central atom, the stronger the oxyacid:
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This equation can also be credited to acids and bases in chemical equilibrium.