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Which of the following can be measured by the Ostwald-Walker dynamic method?

Options

  1. ARelative lowering of vapour pressure
  2. BLowering of vapour pressure
  3. CVapour pressure of the solvent
  4. DAll of the above

Correct answer

D. All of the above

Step-by-step solution

By Ostwald-Walker dynamic method, the relative lowering of vapour pressure, lowering of vapour pressure and vapour pressure of the solvent, all can be measured. In this method, the apparatus used, contains two bulbs : bulb A contains solution and bulb contains solvent. The loss of weight in bulb gives the lowering of vapour pressure and total loss of weight in both the tubes gives the vapour pressure of the solvent and Relative lowering of vapour pressure = lowering of vapour pressure vapour pressure of solvent

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