A) \[HClO\]
B) \[~HCl{{O}_{2}}\]
C) \[~HCl{{O}_{3}}\]
D) \[~HCl{{O}_{4}}\]
Correct Answer: D
Solution :
Key Idea: The acidity of oxyacids of halogens increases with increase in oxidation state of halogen. Oxidation state of Cl in \[HClO=+\text{ }1\] Oxidation state of Cl in \[HCl{{O}_{2}}=+\text{ }3\] Oxidation state of Cl in \[HCl{{O}_{3}}=+\text{ }5\] Oxidation state of Cl in \[HCl{{O}_{4}}=+\text{ }7\] Oxidation state of chlorine is highest in \[HCl{{O}_{4}}\] \[\therefore \]\[HCl{{O}_{4}}\]has highest acidity among oxyacids of chlorine.
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