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Question

Chemistry Question on Solutions

Which of the following has the highest freezing point?

A

1 m NaCl1\, m\, NaCl solution

B

1 m KCl1\, m\, KCl solution

C

1 m AlCl31 \,m \,AlCl_3 solution

D

1 m C6H12O61 \,m \,C_6H_{12}O_6 solution

Answer

1 m C6H12O61 \,m \,C_6H_{12}O_6 solution

Explanation

Solution

C6H12O6C_6H_{12}O_6 is a non-electrolyte hence furnishes minimum number of particles and will have maximum freezing point. ΔTf=iKfm\Delta T_{f} = iK_{f}m or ΔTf∝i\Delta T_{f} \propto i and ΔTf=Tf∘−Tf\Delta T_{f} = T^{\circ}_{f} - T_{f}