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Acid strength is in the order:...

Acid strength is in the order:

A

`HCIO_(4) gt HIO_(4) gt HBrO_(4)`

B

`HCIO_(4) gt HBrO_(4) gt HIO_(4)`

C

`HCIO_(4) lt HBrO_(4) gt HIO_(4)`

D

None

Text Solution

AI Generated Solution

The correct Answer is:
To determine the order of acid strength among the halogen oxoacids (like HClO4, HBrO4, and HIO4), we need to consider two main factors: the oxidation state of the central atom and the electronegativity of the central atom. ### Step-by-Step Solution: 1. **Identify the Acids**: The acids we are comparing are HClO4 (perchloric acid), HBrO4 (perbromic acid), and HIO4 (periodic acid). 2. **Determine Oxidation States**: - For HClO4: Chlorine (Cl) has an oxidation state of +7. - For HBrO4: Bromine (Br) has an oxidation state of +7. - For HIO4: Iodine (I) has an oxidation state of +7. - All three acids have the same oxidation state of +7 for their central atoms. 3. **Consider Electronegativity**: - The electronegativity values of the halogens are as follows: Fluorine (F) > Chlorine (Cl) > Bromine (Br) > Iodine (I). - Since HClO4 contains chlorine, HBrO4 contains bromine, and HIO4 contains iodine, we can rank them based on the electronegativity of the central atom. 4. **Rank the Acids**: - HClO4 (Cl has the highest electronegativity) > HBrO4 (Br has a lower electronegativity than Cl) > HIO4 (I has the lowest electronegativity). - Therefore, the order of acid strength is: HClO4 > HBrO4 > HIO4. 5. **Conclusion**: The order of acid strength is HClO4 > HBrO4 > HIO4. ### Final Answer: The order of acid strength is HClO4 > HBrO4 > HIO4. ---
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