Dishwashing liquid dissolved in water forms an aqueous solution containing bubbl

Question

Dishwashing liquid dissolved in water forms an aqueous solution containing bubbles (the "suds") that are soap-film spheres filled with air.

Part A

How does the pressure difference across the surface of one of these bubbles in the solution compare with the pressure difference across the surface of a bubble of the same size that escapes from the solution and floats in the air?

The pressure difference across the surface of the bubble in the solution is smaller than the pressure difference across the surface of the bubble that floats in the air. The pressure difference across the surface of the bubble in the solution is the same as the pressure difference across the surface of the bubble that floats in the air. The pressure difference across the surface of the bubble in the solution is greater than the pressure difference across the surface of the bubble that floats in the air.

Explanation / Answer

The pressure difference across the surface of the bubble in the solution is smaller than the pressure difference across the surface of the bubble that floats in the air.

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