Which of the following solution has minimum freezing point?

One molal NaCl aqueous solution

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One molal

C a C l_{2}

aqueous solution

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One molal KCl aqueous solution

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One molal urea aqueous solution

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Solution

The correct option is B One molal $C a C l_{2}$ aqueous solution
$Δ T_{f} = i \times K_{f} \times m$
$Δ T_{f}$ is maximum for $C a C l_{2}$ solution
$Δ T_{f} = T_{f}^{\circ} - T_{f}$
So $C a C l_{2}$ has minimum freezing point.

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Which of the following solution has minimum freezing point?

The correct option is B One molal CaCl2 aqueous solutionΔTf=i×Kf×m ΔTf is maximum for CaCl2 solution ΔTf=T∘f−Tf So CaCl2 has minimum freezing point.

The correct option is B One molal $C a C l_{2}$ aqueous solution
$Δ T_{f} = i \times K_{f} \times m$
$Δ T_{f}$ is maximum for $C a C l_{2}$ solution
$Δ T_{f} = T_{f}^{\circ} - T_{f}$
So $C a C l_{2}$ has minimum freezing point.