Isotonic solutions have

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  1. Same boiling point
  2. Same vapor pressure
  3. Same melting point
  4. Same osmotic pressure

Answer (Detailed Solution Below)

Option 4 : Same osmotic pressure
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CONCEPT:

Isotonic Solutions

  • Isotonic solutions are solutions that have the same osmotic pressure.
  • Osmotic pressure is the pressure required to stop the flow of solvent molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
  • Isotonic solutions have the same concentration of solutes, which leads to no net movement of solvent molecules across the membrane.

EXPLANATION:

  • Isotonic solutions specifically refer to having the same osmotic pressure, rather than the same boiling point, vapor pressure, or melting point.

Therefore, isotonic solutions have the same osmotic pressure.

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