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AP EAMCET202021 Sep 2020Morning ShiftChemistrySolutionsActual

Which of the following units is useful in relating concentration of solution with its vapour pressure?

Options

  1. AMole fraction
  2. BParts per million
  3. CMass percentage
  4. DMolality

Correct answer

A. Mole fraction

Step-by-step solution

According to Raoult's law, relative lowering of vapour pressure is directly proportional to mole fraction of solute. So, mole fraction is used in relating concentration of solution with its vapour pressure.

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