Arrange the following oxoacids in the order of their increasing acidic strength:
(A). HOCl
(B). HOCl2
(C). HOCl3
(D). HOCl4
Choose the correct answer from the options given below:
(A). HOCl
(B). HOCl2
(C). HOCl3
(D). HOCl4
Choose the correct answer from the options given below:
Show Hint
- (A), (B), (C), (D)
- (A), (C), (B), (D)
- (A), (D), (B), (C)
- (C), (B), (D), (A)
The Correct Option is C
Solution and Explanation
The acidic strength of oxoacids increases with the number of oxygen atoms attached to the central atom. This is because more oxygen atoms stabilize the conjugate base through resonance.
• HOCl has one oxygen atom
• HOClO has two oxygen atoms
• HOClO2 has three oxygen atoms
• HOClO3 has four oxygen atoms.
The order of increasing acid strength is HOCl <HOClO <HOClO2 <HOClO3. The higher the number of oxygen atoms, the greater the resonance and stabilization of the conjugate base, and thus a stronger acid.
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