Question

Assertion (A): Both $H_2{S}_2{O}_2$ and $H_2{S}_2{O}_3$ contain $S=S$ bonds.
Reason (R): 'ic' acids are more acidic than 'ous' acids.
The correct answer is

• A. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are correct and Reason is not the correct explanation of Assertion
• C. Assertion is true but Reason is false.
• D. Assertion is false but Reason is true.

Answer 1

Answer: (B)

Both Assertion and Reason are correct and Reason is not the correct explanation of Assertion

$+2+2-4$
$H_2{S}_2{O}_2$
$S$ is in $+1$ oxidation state (ous acid)
$+2+4-6$
$H_2{S}_2{O}_3$
$S$ is in $+2$ oxidation state (-ic acid)
-ic acids are more acidic due to higher oxidation number of central atom.