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A partial molar property of a component in a mixture is

  • A.the change in total property per mole of that component added
  • B.the property of the pure component at the very same conditions
  • C.the total property divided by the number of components present
  • D.the property of the whole mixture at infinite dilution

Answer: A

The definition holds temperature, pressure and the amounts of the other components fixed while one is varied. It is generally not equal to the pure component value, and the difference is what makes a solution non-ideal.

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