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## Homework Statement

When pressure is applied to a liquid, its volume decreases. Assuming that the isothermal compressibility κ=-1/V(δV/δP) is independent of pressure, derive an expression for the volume as a function of pressure.

## Homework Equations

## The Attempt at a Solution

I don't know where to start, but I know the answer should be V2=V1 exp[-κ(P2-P1)].