Solubility of solids in water?

Question

a) is independent of pressure above solution.
b) decreases with increasing pressure above solution
c) increases with increasing pressure above solution
d) Solids are not soluable in water
e) none of the above

Answer 1

Answer = a

Many solids dissolve in water, like salt and sugar. Pressure doesn't really have an effect on the solubility of solids.

Now gases are a different story. Increasing pressure will increase the solubility of a gas in water.

Answer 2

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Pressure For condensed phases (solids and liquids), the pressure dependence of solubility is typically weak and usually neglected in practice. Assuming an ideal solution, the dependence can be quantified as: where the index i iterates the components, Ni is the mole fraction of the ith component in the solution, P is the pressure, the index T refers to constant temperature, Vi,aq is the partial molar volume of the ith component in the solution, Vi,cr is the partial molar volume of the ith component in the dissolving solid, and R is the universal gas constant.[10] The pressure dependence of solubility does occasionally have practical significance. For example, precipitation fouling of oil fields and wells by calcium sulfate (which decreases its solubility with decreasing pressure) can result in decreased productivity with time.

Answer 3

a) is independent of pressure above solution.