Multiple choice

Assertion (A): HClO4 is a stronger acid than HClO3. Reason (R): ClO4- ion is more stable than ClO3-.

Directions: In the following question there are two statements, Assertion (A) and Reason (R). Consider both the statements independently and mark your answers as under:

1. If A and R both are correct and R is the correct explanation of A.
2. If A and R both are correct and R is not the correct explanation of A.
3. If A is correct and R is incorrect.
4. If A is incorrect and R is correct.
5. If A and R both are incorrect.

  1. 1

  2. 2

  3. 3

  4. 4

  5. 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

HClO4 is a stronger acid than HClO3. This can be explained on the basis of relative stability of the anion or conjugate base formed after removal of a proton. ClO4- is more stable than ClO3- due to greater dispersal of negative charge on four oxygen atoms. So, HClO4 is a stronger acid than HClO3.

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