Freezing point

The aqueous solution with the lowest
freezing point is
(1) 0.01 m glucose
(2) 0.01 m KCl
(3) 0.01 m BaCl2
(4) 0.01 m K4[Fe(CN)6]?

With explanation please.thanks

7 Answers

1
comedy maniya ·

Answer is glucose C6H12O6

Because decrease in freezing point is colligative property so it doesn't depend on nature of solution

1
Manas ·

hey since the molalities are same the molecular weights of the substances matter.
i think the answer is KCl one.

is the answer (b)??????????????

1
Thedarkknight ·

No sorry....Its given as d. I dont know how..do u have any idea?

11
rkrish ·

1)glucose : no dissociation
2)KCl : dissociation into 2 particles
3)BaCl2 : dissociation into 3 particles
4)K4[Fe(CN)6] : dissociation into 5 particles

i (vant Hoff factor) of K4[Fe(CN)6] is max.
(Since molality is also same) Hence max. depression in freezing pt.
Hence lowest freezing pt.

1
Manas ·

yah correct. rkrish.

11
rkrish ·

i dont think it has any thing to do with mol.wt.

1
Thedarkknight ·

thank you[1]

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