uestion

Asked in: JEE Main-2019

At room temperature, a dilute solution of urea is prepared by dissolving 0.60g of urea

in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mmHg,

lowering of vapour pressure will be:

(molar mass of urea = 60g/mol)

A.

0.027 mmHg

B.

0.028 mmHg

C.

0.017 mmHg

D.

0.031 mmHg

uestion

Asked in: JEE Main-2019

At room temperature, a dilute solution of urea is prepared by dissolving 0.60g of urea

in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mmHg,

lowering of vapour pressure will be:

(molar mass of urea = 60g/mol)

A.

0.027 mmHg

B.

0.028 mmHg

C.

0.017 mmHg

D.

0.031 mmHgv

uestion

Asked in: JEE Main-2019

At room temperature, a dilute solution of urea is prepared by dissolving 0.60g of urea

in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mmHg,

lowering of vapour pressure will be:

(molar mass of urea = 60g/mol)

A.

0.027 mmHg

B.

0.028 mmHg

C.

0.017 mmHg

D.

0.031 mmHg

Answers (1)

Lowering Of vapor Pressure:

=p^{0}-p=p^{0} \cdot x_{\text { solute }}

Now,

\begin{array}{l}{\therefore \Delta p=35 \times \frac{0.6 / 60}{\frac{0.6}{60}+\frac{360}{18}}} \\ {=35 \times \frac{0.1}{01+20}=35 \times \frac{.01}{20.01}} \\ {=.017 \mathrm{mm} \mathrm{Hg}}\end{array}

Most Viewed Questions

Preparation Products

Knockout JEE Main (Six Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 9999/- ₹ 8499/-
Buy Now
Knockout JEE Main (Nine Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 13999/- ₹ 12499/-
Buy Now
Test Series JEE Main 2024

Chapter/Subject/Full Mock Tests for JEE Main, Personalized Performance Report, Weakness Sheet, Complete Answer Key,.

₹ 7999/- ₹ 4999/-
Buy Now
JEE Main Rank Booster 2023

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, Faculty Support.

₹ 9999/- ₹ 6999/-
Buy Now
JEE Foundation + Knockout JEE Main 2024 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports,.

₹ 3999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions