JEE Main 2014Chemistryp Block Elements (Group 15, 16, 17 & 18)EasyMCQ

JEE Main 2014 — p Block Elements (Group 15, 16, 17 & 18) Question with Solution

JEE Main 2014 (06 Apr)

Question

Among the following oxoacids, the correct decreasing order of acid strength is :

Choose an option

Show full solutionCorrect option: C
Correct answer
CHClO4 > HClO3 > HClO2 > HOCl

Step-by-step explanation

In oxyacids of chlorine as oxygen content increases. The acidic strength increases.

HClO4 > HClO3 > HClO2 > HOCl

Conjugate base 

Cl O 4 − − 4 R.S.

Cl O 3 − − 3 R.S.

Cl O 2 − − 2 R.S.

Cl O − − no R.S.

(conjugate base) anion stability increase due to resonance. So acidic character increase.
 

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About this question

This is a previous-year question from JEE Main 2014, covering the p Block Elements (Group 15, 16, 17 & 18) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.