How does soap water membrane thickness affect surface tension?

[Chain Shawn]

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!

 

[gneill]

Please show your own attempt at solving the problem.

 

[berkeman]

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!

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