MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryIonic equilibriumTheory of Acids and Bases

Review the equilibrium and choose the correct statement HClO4 + H2O H3O + + ClO4 –

A.HClO4 is the conjugate acid of H2O

B.H3O

C.H2O is the conjugate acid of H3O

D.ClO4✓ Correct

Explanation

According to Bronsted - Lowry concept, an acid is a proton donor in aqueous solution. HClO4 + H2O H3O + + ClO4 – IONIC EQUILIBRIUM 29 Since 4 HClO is an acid, therefore its conjugate base is 4 ClO. Theory of Acids and Bases

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