Pblock Elementsii Result Question 15
15. The set with correct order of acidic strength is
(2001,1 M)
(a) $\mathrm{HClO} < \mathrm{HClO} _2 < \mathrm{HClO} _3 < \mathrm{HClO} _4$
(b) $\mathrm{HClO} _4 < \mathrm{HClO} _3 < \mathrm{HClO} _2 < \mathrm{HClO}$
(c) $\mathrm{HClO} < \mathrm{HClO} _4 < \mathrm{HClO} _3 < \mathrm{HClO} _2$
(d) $\mathrm{HClO} _4 < \mathrm{HClO} _2 < \mathrm{HClO} _3 < \mathrm{HClO}$
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Answer:
Correct Answer: 15. ( a )
Solution:
Amongst oxyacids of a given halogen, higher the oxidation number of halogen, stronger the acid. Hence,
$\mathrm{HOCl} < \mathrm{HClO} _2 < \mathrm{HClO} _3 < \mathrm{HClO} _4 .$
BETA
