Rank the following aqueous solution with increasing boiling point. (1) 0.10 m NaCl (2) 0.10 m...

Question

Question

Rank the following aqueous solution with increasing boiling point.

(1) 0.10 m NaCl

(2) 0.10 m Al(NO₃)₃

(3) 0.30 m C₁₂H₂₂O₁₁ (sucrose)

science chemistry

Answer 1

Answer #1

Boiling point elevation is given by following formula

delta(Tb)=Kb * m * i

where Tb=change in boiling point

Kb= molal boiling point constant (0.51 celcius/m for water)

m= molality of sol.

i= vant hoff factor

and we have i value for (1) is 2, for (2) is 4, for (3) is 1.

so we have increasig order as

1<3<2

Answer 2

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