Q9 / 90 · KVPY 2015 (SB/SX) · Chemistry

The pH of $1 \mathrm{~N}$ aqueous solutions of $\mathrm{HCl}, \mathrm{CH}_{3} \mathrm{COOh}$ and HCOOH follows the order

  • A
    $\mathrm{HCl}>\mathrm{HCOOH}>\mathrm{CH}_{3} \mathrm{COOH}$
  • B
    $\mathrm{CHl}=\mathrm{HCOOH}>\mathrm{CH}_{3} \mathrm{COOH}$
  • Correct answer
    C
    $\mathrm{CH}_{3} \mathrm{COOH}>\mathrm{HCOOH}>\mathrm{HCl}$
  • D
    $\mathrm{CH}_{3} \mathrm{COOH}=\mathrm{HCOOH}>\mathrm{HCl}$

Solution

$\mathrm{HCl}>\mathrm{HCOOH}>\mathrm{CH}_{3} \mathrm{COOH} ;$ Order of Acidic strength

Hence, the correct answer is option: 'C'.

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