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Question

Which one of the following is incorrect for ideal solution?
  1. Umix=0
  2. Gmix=0
  3. P=PobsPcalculated by Raoult's law=0
  4. Hmix=0

A
P=PobsPcalculated by Raoult's law=0
B
Umix=0
C
Hmix=0
D
Gmix=0
Solution
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The concept of an ideal solution is fundamental to chemical thermodynamics and its applications, such as the use of colligative properties. An ideal solution or ideal mixture is a solution in which the enthalpy of solution ( ΔHsolution=0 ) is zero. As the enthalpy of the solution nears zero, the solution becomes more ideal.

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