How will the surface tension of water change when soap is dissolved in it?

It is necessary to use the reference book and find the corresponding values for water and soap. The modulus of the surface tension coefficient for water changes with temperature. Changes occur from 0 ° C to 100 ° C. We will take water at 30 ° C, the surface tension modulus is 72.3 * 10–3 N / m. For soap, this value is much less: 40 * 10−3 N / m. Now, knowing the coefficients, let’s return to the condition and answer the question. Since soap has a lower coefficient of surface tension, then the coefficient of water will decrease with their interaction.