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Which parameter is not related to van't Hoff equation? osmotic pressure temperature solute concentration none of the above

Question

Which parameter is not related to van't Hoff equation?

  • osmotic pressure
  • temperature
  • solute concentration
  • none of the above
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Solution

The van't Hoff equation is used in physical chemistry to relate the change in the equilibrium constant of a chemical reaction to the change in temperature. The equation is:

ln(K2/K1) = -ΔH/R * (1/T2 - 1/T1)

Where:

  • K1 and K2 are the equilibrium constants at temperatures T1 and T2 respectively,
  • ΔH is the enthalpy change of the reaction,
  • R is the universal gas constant,
  • T1 and T2 are the absolute temperatures.

From the equation, we can see that the parameters involved are the equilibrium constants, the enthalpy change of the reaction, the universal gas constant, and the temperatures.

Therefore, the parameter that is not related to the van't Hoff equation is the osmotic pressure. The osmotic pressure is related to colligative properties, which depend on the number of solute particles in a solution, but it does not appear in the van't Hoff equation.

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