Question

Why the freezing point depression of 0.1 m nacl is nearly twice that of 0.1 m glucose solution?

Answer 1

Answer:

Explanation:

Freezing point depression of 0.1m nacl solution nearly twice that of 0.1m glucose solution because NaCl is a strong electrolyte and it dissociates to give two ions  and , whereas glucose  is a non electrolyte and it does not dissociate to give ions.

Depression in freezing point :

Formula used for lowering in freezing point is,

where,

= change in freezing point

i= vant hoff factor

= freezing point constant

m = molality

for complete dissociation of NaCl, i=2 whereas for glucose i=1.