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In comparison to a (0.01 M ) solution of glucose, the depression in freezing point of a (0.01 M MgCl ₂ ) solution is (Molecular weight of ( MgCl ₂=95 ), molecular weight of glucose (=180 ) ).

Options

  1. Athe same
  2. Babout twice
  3. Cabout three times
  4. Dabout six times

Correct answer

C. about three times

Step-by-step solution

(0.01 M ) solution of glucose does not ionise while (0.01 M MgCl ₂ ) solution furnishes 3 ions ( ( Mg ²⁺+2 Cl ⁻ ) )in the solution, hence the value of colligative property of ( MgCl ₂ ) solution is about 3 times. Hence, the correct option is (c).

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