How does soap water membrane thickness affect surface tension?

Click For Summary
Decreasing the thickness of a soap water surface while keeping the concentration constant typically leads to an increase in surface tension due to reduced molecular interactions at the surface. Conversely, as the soap water membrane evaporates, its thickness decreases and concentration increases, which can initially raise surface tension but may eventually lead to a decrease as the soap molecules become more densely packed and interact differently. The interplay between thickness and concentration is crucial in determining the overall surface tension. Understanding these dynamics is essential for applications in various scientific fields. Further experimentation and analysis are recommended to explore these effects in detail.
Chain Shawn
Messages
3
Reaction score
0
Homework. Moved to Introductory Physics.
1.If the thickness of soap water surface decrease, whereas the concentration remain the same, how will the surface tension change?

2. If the membrane of soap water start to evaporate, its thickness become thinner and it’s concentration increase, How will the surface tension change?

Thank you!
 
Physics news on Phys.org
Please show your own attempt at solving the problem.
 
Chain Shawn said:
1.If the thickness of soap water surface decrease, whereas the concentration remain the same, how will the surface tension change?

2. If the membrane of soap water start to evaporate, its thickness become thinner and it’s concentration increase, How will the surface tension change?

Thank you!
PF rules require that you show us your best efforts in answering these questions before we can offer tutorial help. Please show us what you have done so far...
 

Thread 'Coulomb's force vs the Lorentz force'

Beams of electrons and protons move parallel to each other in the same direction. They ______. a. attract each other. b. repel each other. c. neither attract nor repel. d. the force of attraction or repulsion depends upon the speed of the beams. This is a previous-year-question of CBSE Board 2023. The answer key marks (b) as the right option. I want to know why we are ignoring Coulomb's force?
View full post »

Similar threads

Effect of temperature on surface tension
Replies
2
Views
1K
Surface Tension and Pressure Balance in a Spherical Water Drop
Replies
2
Views
2K
Calculating surface tension with the Capillary Equation
Replies
29
Views
4K
Tension in a deformed cylindrical bag on a surface
Replies
18
Views
2K
What is the thickness of the drop if its radius is r?
Replies
1
Views
2K
Match on water sustained by surface tension
Replies
3
Views
1K
Surface Tension - Using hot soapy water to wash clothes
Replies
1
Views
2K
What is the mass of the water in the stirrer supported by surface tension?
Replies
2
Views
3K
Why Does Detergent Cause a Cotton Loop to Expand on Water?
Replies
3
Views
3K
I Behavior of Clamped-Edge Circular Membrane
Replies
32
Views
2K