CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Non-Ideal Solutions

10 drops of a...

Question

10 drops of an oleic acid solution of concentration 1/400 cm cube per cm cube of alcohol, are dropped on a water surface. The circular film thus produce has a radius 10 cm. Find the molecular size of oleic acid , if the radius of each drop is 1.4mm

Open in App

Solution

Suggest Corrections

thumbs-up

2

Similar questions

Q. Suppose you have taken a dilute solution of oleic acid in such a way that its concentration becomes

0.01 {cm}^{3}

of oleic acid per

{cm}^{3}

of the solution. Then you make a thin film of this solution (monomolecular thickness) of area

4 {cm}^{2}

100

spherical drops of radius

{(\frac{3}{40 π})}^{\frac{1}{3}} \times 10^{- 3} cm

. Then the thickness of oleic acid layer will be

x \times 10^{- 14} m

x

Q. A mercury drop of radius

1 c m

is sprayed into

10^{6}

drops of equal size. The energy expended in joule is (surface tension of mercury is

460 * 10^{- 3}

Q. A water drop of radius 1mm is split into

10^{6}

identical drops. Surface tension of water is 72 dynes/cm. Find the energy spent in this process.

Q. Eight drops of water, each of radius 2 mm are falling through air at a terminal velocity of

8 c m s^{- 1}

. If they coalesce to form a single drop, then the terminal velocity of combined drop will be

Q. A Solution of palmitic acid in benzene contains

4.24 g

of acid per litre. When this solution is dropped on a surface, benzene evaporates and palmitic acid forms a unimolecular film on the surface. If we wish to cover an area of

500 {cm}^{2}

with a unimolecular film, what volume of solution (in litres) should be used? The area covered by one palmitic acid molecule may be taken as

0.21 {nm}^{2}

.
Molecular weight of palmitic acid = 256

g m o l^{- 1}

.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ideal and Non Ideal Solutions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Non-Ideal Solutions

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon