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Choose the correct option.
The correct order of increasing acidic strength of the oxoacids of chlorine is:
- (1)$\text{HClO}_3 < \text{HClO}_4 < \text{HClO}_2 < \text{HClO}$
- (2)$\text{HClO} < \text{HClO}_2 < \text{HClO}_3 < \text{HClO}_4$
- (3)$\text{HClO}_2 < \text{HClO} < \text{HClO}_4 < \text{HClO}_3$
- (4)$\text{HClO}_3 < \text{HClO}_4 < \text{HClO} < \text{HClO}_2$
Answer
Answer
AICorrect option: (2)
Answer: (2) $\mathrm{HClO} < \mathrm{HClO_2} < \mathrm{HClO_3} < \mathrm{HClO_4}$
Acidic strength increases with the number of oxygen atoms, as the conjugate base becomes more stable by resonance.
From ISC 2019 Chemistry Paper 1, question 1(b)(iii).