Relative order of acidity of oxy acid is
Correct answer: B. HClO4 > HClO3 > HClO2 > HClO
- A. HClO > HClO2 > HClO3 > HClO4
- B. HClO4 > HClO3 > HClO2 > HClO
- C. HClO3 > HClO2 > HClO > HClO4
- D. HClO2 > HClO4 > HClO3 > HClO
Explanation
The acidity of oxyacids is influenced by the number of oxygen atoms bonded to the central atom. More oxygen atoms increase the electron-withdrawing effect, enhancing the acid's ability to donate protons. Therefore, the correct order of acidity for the given oxyacids is HClO4 > HClO3 > HClO2 > HClO. Option B correctly reflects this order, whereas the other options do not align with the principle that more oxygen atoms increase acidity.
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Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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