Which of the following statements are correct:

(A). In ideal solutions, the enthalpy of mixing of the pure components to form the solution is zero.
(B). The volume of the solution is equal to the sum of the volumes of the two components.
(C). In binary ideal solutions, attractive forces between A-A and B-B are nearly equal to those between A-B.
(D). In negative Raoult's law deviation, attractions between A-B are weaker than those of A-A and B-B attractions.

Choose the correct answer from the options given below:

(A), (B), and (C) only

The correct answer is Option (4) → (A), (B), and (C) only

Core Concept:

Ideal solutions obey Raoult’s law completely. They show no heat change on mixing and no volume change. Intermolecular interactions between unlike molecules are similar to those between like molecules.

Note:- Raoult's law-Raoult's law is defined as the principle that the vapor pressure of an ideal solution is directly proportional to the vapor pressure of each component and their respective mole fractions, indicating that the presence of a solute lowers the vapor pressure compared to that of the pure solvent.

Option-wise Explanation:

Statement (A):

In an ideal solution, intermolecular forces between A-B are similar to A-A and B-B. Because of this, no extra energy is absorbed or released during mixing. Thus enthalpy of mixing becomes zero. Hence this statement is correct.

Statement (B):

Ideal solutions show no expansion or contraction on mixing. This means volume change on mixing is zero. Therefore total volume remains equal to the sum of individual volumes. Hence this statement is correct.

Statement (C):

Ideal solution formation requires similarity in intermolecular attractions. For ideal behavior, A-B interactions must be nearly equal to A-A and B-B. Only then Raoult’s law is followed. Hence this statement is correct.

Statement (D):

Negative deviation occurs when A-B attractions are stronger, not weaker. Stronger interactions lower vapour pressure below ideal value. Weaker interactions lead to positive deviation instead. Hence this statement is incorrect.