Question

A binary liquid solution is prepared by mixing n - heptane and n - hexane. Which of the following is / are correct?

• A. interactions between like molecules is same as interactions between unlike molecules
  
• B. $\Delta H_{mix}=0$
  
• C. $\Delta V=0$
  
• D. All of the above

Answer 1

The correct option is D All of the above

For an ideal solutions , attractive forces between like molecules are same as attractive forces between unlike molecules. Hence enthalpy of mixing is zero. And also change in volume of mixing is also zero.