NEET 2007 Chemistry question

Which one of the following orders correctly represents the increasing acid strengths of the given acids?

(1)
(2)Correct
(3)
(4)

Answer: (2)

Solution

The acids are hypochlorous (HOCl), chlorous (), chloric () and perchloric () acid. With more oxygen atoms on chlorine (oxidation state +1, +3, +5, +7), the negative charge on the conjugate base is delocalised over more oxygen

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Question ID VK-089862