Question:

The molecular mass of NaCl as determined by osmotic pressure measurement is

Updated On: Jul 7, 2022
  • 58.5
  • less than 58.5
  • more than 58.5
  • unpredictable
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The Correct Option is B

Solution and Explanation

NaCl undergoes dissociation in an aqueous solution. As such number of particles in solution increases, the magnitude of colligative property increases, molecular mass decreases.
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Concepts Used:

Osmosis

Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.

There are three different types of solutions:

  • Isotonic Solution is one that has the same concentration of solutes both inside and outside the cell.
  • Hypertonic solution is one that has a higher solute concentration outside the cell than inside.
  • Hypotonic solution is one that has a higher solute concentration inside the cell than outside.