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JEE Main20206 Sep 2020Morning ShiftChemistryIonic EquilibriumActual

Arrange the following solutions in the decreasing order of pOH : (A) 0 . 01 MHCl (B) 0 . 01 MNaOH (C) 0 . 01 MCH 3 COONa (D) 0 . 01 MNaCl

Options

  1. A( A ) > ( C ) > ( D ) > ( B )
  2. B( A ) > ( D ) > ( C ) > ( B )
  3. C( B ) > ( C ) > ( D ) > ( A )
  4. D( B ) > ( D ) > ( C ) > ( A )

Correct answer

B. ( A ) > ( D ) > ( C ) > ( B )

Step-by-step solution

   pH 0 . 01 MHCl = 2 pH of 0 . 01 MNaOH = 12 pH of 0 . 01 MCH 3 COONa > 7 pH of 0 . 01 MNaCl = 7 So the order of pH : B > C > D > A So the order of pOH :     B < C < D < A

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