81. Solving a chemistry problem

81. Solving a chemistry problem

1. Calculate the excess pressure in a drop of water (due to curvature) with a specific surface area of 3 * 106 m–1 at a temperature of 313 K, if the surface tension of water at 298 K is 71.96 mJ/m2, and the temperature coefficient of the surface tension of water is db/ dT = –0.16 mJ/(m2*K).

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