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For   1   molal   aqueous solution of the following compounds, which one will show the highest freezing point?

Options

  1. ACo H 2 O 3 Cl 3 . 3 H 2 O
  2. BCo H 2 O 6 Cl 3
  3. CCo H 2 O 5 Cl Cl 2 . H 2 O
  4. DCo H 2 O 4 Cl 2 Cl . 2 H 2 O

Correct answer

A. Co H 2 O 3 Cl 3 . 3 H 2 O

Step-by-step solution

Depression in freezing point ΔT f = i . k f . m For one molal soloution ; ΔT f ∝ i i is least for   [ Co ( H 2 O ) 3 Cl 3 ] . 3 H 2 O ; So ΔT f is least but freezing point is high.

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