Which of the following is an example of an ideal solution?
NaCl and HCl
NaCl and KCl
Benzene and Toluene
Ethanol and Acetone
An ideal solution is one in which the enthalpy of mixing is zero and the interactions between the molecules of the solute and solvent are similar. Benzene and toluene are examples of ideal solutions because they have similar molecular sizes and similar intermolecular forces of attraction. This leads to a near-perfect mixing of the two liquids, resulting in an ideal solution.