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NTA Abhyas JEE Main2020ChemistrySolutionsPractice

For which of the following van't Hoff factor cannot be greater than unity?

Options

  1. AK 4 [ Fe ( CN ) 6 ]
  2. BAlCl 3
  3. CNH 2 CONH 2
  4. DKNO 3

Correct answer

C. NH 2 CONH 2

Step-by-step solution

For urea ( NH 2 CONH 2 ) the van't Hoff factor can not be greater than unity because urea is non-ionisable while other are ionic compounds so will undergo dissociate in aqueous solution so van't Hoff factor will become more then unity.

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