An aqueous solution containing 1 g of urea boils at 100.25°C. The aqueous solution containing 3 gof glucose in the same volume will boil be

Question

An aqueous solution containing 1 g of urea boils at 100.25°C. The aqueous solution containing 3 gof glucose in the same volume will boil be (A) 100.75°C (B) 100.5°C (C) 100°C (D) 100.25°C

Tardigrade Admin · Accepted Answer

Solution of non-electrolyte having same concentration will boil at same same temperature.

10 g

of urea;

m = \frac{\frac{1}{60}}{v} = \frac{1}{60 v}

3 g

of glucose;

m = \frac{\frac{3}{180}}{v} = \frac{1}{60 v}

We know

Δ T_{b} = k_{b} \times m

\Rightarrow Δ T_{b} \propto m

Here, molarity remains unchanged
Hence, they have the same boiling point.

Q. An aqueous solution containing 1 g of urea boils at 100.25 $^{\circ}$ C. The aqueous solution containing 3 gof glucose in the same volume will boil be

100.75 $^{\circ}$ C

100.5 $^{\circ}$ C

100 $^{\circ}$ C

100.25 $^{\circ}$ C

Q. An aqueous solution containing 1 g of urea boils at 100.25∘C. The aqueous solution containing 3 gof glucose in the same volume will boil be

100.75∘C

100.5∘C

100∘C

100.25∘C

Solution of non-electrolyte having same concentration will boil at same same temperature. 10g of urea; m=v601​​=60v1​ 3g of glucose; m=v1803​​=60v1​ We know ΔTb​=kb​×m ⇒ΔTb​∝m Here, molarity remains unchanged Hence, they have the same boiling point.

Q. An aqueous solution containing 1 g of urea boils at 100.25 $^{\circ}$ C. The aqueous solution containing 3 gof glucose in the same volume will boil be

100.75 $^{\circ}$ C

100.5 $^{\circ}$ C

100 $^{\circ}$ C

100.25 $^{\circ}$ C