Question

For an ideal solution of two components A and B, which of the following is true?

• A. $\Delta \mathrm{H}_{\text {mixing }}>0$ (zero)
• B. A-B interaction is stronger than A-A and B-B interactions
• C. A-A, B-B and A-B interactions are identical
• D. $\Delta \mathrm{H}_{\text {mixing }}<0$ (zero)

Answer 1

Answer: (C)

When two components A and B form an ideal solution, the interactions A - A, B - B and A - B are similar due to identical molecular sizes of species A and B.