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If BaCl ₂ ionizes to an extent of 80 % in aqueous solution, the value of van't Hoff factor is

Options

  1. A2.6
  2. B0.4
  3. C0.8
  4. D2.4

Correct answer

A. 2.6

Step-by-step solution

BaCl ₂(s) H ₂ O Ba ²⁺+2 Cl ⁻ array cccl 1 & & 0 & 0 & 1-0.8 & & 0.8 & 2 0.8 & In aq. solution array i= No. of moles after reaction Initial number of moles = 1-0.8+0.8+(2 0.8) 1 =2.6

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