The organic liquids toluene (C₇H₈) and cyclohexane (C₆H₁₂) are combined to form a solution. Toluene and cyclohexane are both nonpolar so they are completely miscible. In the solution formation, compare the entropy of the system to the separate pure liquids.

The solution becomes hotter when sodium bromide (NaBr) is dissolved in water. What causes the solution to form? What is the driving force of the process?

Dicycloverine (C₁₉H₃₅NO₂) also known as dicyclomine is a drug used to cure gastrointestinal tract spasms. The conversion of the free-base form (C₁₉H₃₅NO₂) of dicycloverine to the protonated hydrochloride form (C₁₉H₃₆ClNO₂) using one equivalent of HCl is shown below (Note: Not all carbons and hydrogens are shown. Each "corner" represent a carbon bonded to the correct number of hydrogens in order to make a total of four bonds):

Based on the given structure, determine which form of dicycloverine is more soluble in water.

Identify if the following process is endothermic or exothermic: Dissolving NaCl in H₂O increases the temperature of the solution.

At 30°C, the solubility of bromoform (CHBr₃) and carbon tetrabromide (CBr₄) in water is 3.2 g/L and 0.24 g/L , respectively. Explain the greater solubility of Bromoform in water than carbon tetrabromide.

Arrange the following solute-solvent interactions in order of increasing strength of attraction.

i. CS₂ in CCl₄

ii. Na⁺ in H₂O

iii. CH₃NH₂ in H₂O