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Why HClO4 is strong acid than HClO3?

Updated: 8/10/2023
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11y ago

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HClO4 is a stronger acid than H2SO4 because the chlorine (Cl) is more electronegative than sulfur (S). As a result the chlorine atom exerts a stronger "pull" on the electrons in a molecule than sulfur does, making it easier for a hydrogen ion (H+) to break off.

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13y ago
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13y ago

Perchloric acid (HClO4) is the strongest of ALL (5 kinds of) chloric acids, hence it has the lowest (even the most negative) pKa value.

However there is no difference between the pKa values of HClO4 and HClO4 (?!). They are (not coincidentially) equal.

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13y ago

Chlorine (Cl) is more electronegative than selenium (Se) and so exerts a stronger "pull" on the electrons in a molecule. This makes it easier for a hydrogen ion (H+) to break off.

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13y ago

Both are strong acids in water, it means: stronger than H3O+,

but HClO4 is much stronger than HClO3.

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11y ago

HClO4 is a stronger acid than HClO3 because its ka value is larger

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12y ago

Oxygen is electron withdrawing, meaning it pulls electrons away from the rest of the molecule. More oxygen atoms, then make it easier for an H+ ion to break off.

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Q: Why HClO4 is strong acid than HClO3?
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Related questions

Is a carbonic acid weak or strong?

H2CO3 is a weak acid--you can tell because there is one less H than O. Strong ternary acids have at least 2 less H than O (for instance, H2SO4, HClO3, HClO4). Strong binary acids are made of halogens, except for weak HF (so they are HCl, HBr, HI).


What is the name for aqueous HCLO4?

This compound, HCLO4, is perchloric acid.


What are the 5 acids?

There are far more than 5 acids. There are, however, 6 (some sources say 8) strong acids. They are: Hydrochloric acid (HCl) Hydrobromic acid (HBr) Hydroiodic acid (HI) Perchloric acid (HClO3) Nitric acid (HNO3) Sulfuric acid (H2SO4) Some sources also list Chloric acid (HClO3) and Periodic acid (HIO4) as strong acids. There are hundreds of weak acids. Common example include: Acetic acid (CH3CO2H) Formic acid (HCO2H) Carbonic acid (H2CO3) Phosphoric acid (H3PO4) Hydrofluoric acid (HF) Hydrosulfuric acid (H2S)


Is perchloric acid a weak acid?

Actually perchloric acid (HClO4) is a much stronger acid than chlorous acid (HClO2). The strength of an acid is determined by the ability of a hydrogen ion (H+) to break away. Perchloric acid has more oxygen, which is electron withdrawing, in a molecule, making it easier for the H+ ion to break away.


Can you explain briefly why silicic acid H2SiO3 is a weak acid and perichlorate acid HClO4 is a strong acid?

Chlorine (Cl) is much more electronegative than silicon (Si). This means that chlorine exerts a much stronger "pull" on the electrons in a perchloric acid molecule than silicon does in a silicic acid molecule. The stronger pull makes it easier for a hydrogen ion (H+) to break away. The greater the degree of dissociation the stronger the acid. Perchloric acid dissociates completely in water, thus marking it as a strong acid. Silicic acid only dissociates partially, thus marking as a weak acid.


WHAT determines if an acid will be strong or weak?

The ability of dissociation and the concentration is what causes an acid to be strong or weak. If it is strong, it will dissociate in water and have a pH lower than 7. A weak acid will partially dissociate in water, and it will have a pH of 7 or greater.


Is hso4 a strong or weak acid?

HSO4- is a stronger acid than NH4+


Which acid is stronger HOCl or HOBr?

chlorine is high electronegative then bromine so it attracts the shared electrons powerfully so ' O-H ' bond in HOCl is weaker as compare to HOBr, therefore HOCl easily donate the H+ ion in water and it is stronger acid than HOBr.


What makes a strong acid differ from a weak acid?

A strong acid dissociates more completely than a weak acid.


How acid is strong and weak?

A strong acid dissociates more fully than a weak


Is The conjugate acid of a strong base stronger acid than water?

No, the conjugate acid of most strong bases is water.


IS 0.1 M strong acid a better conductor than 1 M weak acid?

0.1 M strong acid is a better conductor than 1 M weak acid