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KCET2019ChemistryChemical Equilibrium

Match the following pKa values. array |l|l| Acid & pKa (a) Phenol & (i) 16 (b) p-Nitrophenol & (ii) 0.78 (c) Ethanol & (iii) 10 (d) Picric acid & (iv) 7.1 array

Options

  1. Aarray llll a & b & c & d array
  2. B( array llll a & b & c & d iv & ii & iii & i array )
  3. C( array llll a & b & c & d iii & iv & i & ii array )
  4. D( array llll a & b & c & d i i & i & i i & i v array )

Correct answer

C. ( array llll a & b & c & d iii & iv & i & ii array )

Step-by-step solution

The compound will be more acidic when its conjugate base is more stable. In case of these given compounds, more the electron with the drawing group, present more the compound will be more acidic.

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