S Block Elements Question 39
Question: The following acids have been arranged in the order of decreasing acid strength. Identify the correct order. (I) $ ClOH $ (II) $ BrOH $ (III) $ IOH $
[IIT 1996]
Options:
A) $ I>II>III $
B) $ II>I>III $
C) $ III>II>I $
D) $ I>III>II $
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Answer:
Correct Answer: A
Solution:
The oxidation state of halogens is same +1. Therefore the acidic character depends only upon the electronegativity. Higher the electronegativity of the halogen more easily if will pull the electrons of $ O-H $ bond toward itself and hence, stronger is the acid.
BETA
