hyd Some ions are sketched below. Rank them in increasing order of size of hydration enthalpy AHhyd That is, select 1 next to the ion with the smallest AH select 2 next to the ion with the next bigger AHhyd and so on. (Choose one) ▼ (Choose one) ▼ (Choose one) Y (Choose one) X S

1-Intermolecular forces of interaction influence the algebraic signs (“+” or “-“) and the magnitude of DHsoln. Consider a solution composed of liquid-A and liquid-B, such that the intermolecular force between molecules A and B is stronger than either between A and A or B and B.   (a) Does the formation of an A-B solution result in a positive DHsoln (implying an endothermic process) or a negative DHsoln (implying an exothermic process)? Explain your reasoning.   (b) If you have a solution that contains 50% of each by mole quantity, would the boiling point of the solution be higher or lower than the average boiling points of the individual liquids? Explain.

A pharmacist mixes togehter 20 g of crystals of compound A and 10g of crystals of compound B. The mixture is then dissolved in 120mL of water to make cough syrup.

(Q73) A solution contains 16.90 grams of magnesium chloride and 815.7 grams of water. What is the vapor pressure (in torr) of this solution at 40.00°C? The vapor pressure of water at this temperature is 55.30 torr. You should use the experimental value of the van't Hoff factor for this calculation. (4 sf)