Chem 122

Which of the following options most accurately defines a solution? Multiple choice question. A mixture of substances dissolved in water. A homogeneous mixture of two or more substances. Any mixture of two or more substances. A solid dissolved in a liquid.

A homogeneous mixture of two or more substances.

Which of the following statements correctly describe crystallization and/or precipitation? Select all that apply. Multiple select question. Crystallization is a synonym for precipitation. Crystallization is the process in which dissolved solute comes out of solution and forms crystals. Crystallization is the process of adding a solute to a solution until no more can dissolve. Both crystallization and precipitation describe the separation of excess solid substance from a supersaturated solution.

Crystallization is the process in which dissolved solute comes out of solution and forms crystals. Both crystallization and precipitation describe the separation of excess solid substance from a supersaturated solution.

Which of the following is an intermolecular force exhibited in a solution of CH3OCH3 in CH3OH? Select all that apply. Multiple select question. Dispersion forces Ion-dipole forces Hydrogen bonding Dipole-dipole forces

Dispersion forces Hydrogen bonding Dipole-dipole forces

Which of the following processes occur when glucose (blood sugar) dissolves in water? Select all that apply. Multiple select question. Interactions between water molecules are broken. Covalent bonds in glucose and water molecules are broken. Glucose-water interactions are formed. Glucose-glucose interactions are strengthened. Interactions between glucose molecules are broken.

Interactions between water molecules are broken. Glucose-water interactions are formed. Interactions between glucose molecules are broken.

Which of the following statements correctly describe the role played by disorder in the formation of a solution? Select all that apply. Multiple select question. An increase in disorder is not enough to overcome an unfavorable (endothermic) enthalpy change. Enthalpy alone determines whether a solute dissolves in a solvent or not. Much of the order of a pure solvent and solute is destroyed when the solute dissolves in the solvent. The solution process is generally accompanied by an increase in disorder. An endothermic solution process may still occur if there is an increase in disorder for this process.

Much of the order of a pure solvent and solute is destroyed when the solute dissolves in the solvent. The solution process is generally accompanied by an increase in disorder. An endothermic solution process may still occur if there is an increase in disorder for this process.

Which of the following statements correctly describe solvation? Select all that apply. Multiple select question. Solvation is called hydration when the solvent is water. Solvation is the process in which a single water molecule interacts with a single cation and anion from a solute. During solvation, a solute particle is surrounded by solvent molecules arranged in a particular way. Solvation is the random mixing of a solvent and a solute. Solvation involves the interaction between solute particles and solvent molecules.

Solvation is called hydration when the solvent is water. During solvation, a solute particle is surrounded by solvent molecules arranged in a particular way. Solvation involves the interaction between solute particles and solvent molecules.

Which of the following options describe situations in which hydrogen bonding will be observed between the solute and the solvent? Select all that apply. Multiple select question. Solvent and solute both contain OH or NH groups. Solvent and solute both contain O, N, or F. Solvent contains N, O, or F; solute contains OH or NH groups. Solvent contains OH or NH groups, solute contains N, O, or F atoms. As long as the solvent can form hydrogen bonds, hydrogen bonding is observed between solute and solvent.

Solvent and solute both contain OH or NH groups. Solvent contains N, O, or F; solute contains OH or NH groups. Solvent contains OH or NH groups, solute contains N, O, or F atoms.

Which of the following statements correctly describe solubility? Select all that apply. Multiple select question. Solubility depends only on the nature of the solvent. The solubility of a given substance in a particular solvent varies with temperature. If a solute has a high solubility it will dissolve equally well in all solvents. A concentrated solution contains a relatively large amount of solute in a given amount of solvent. Opposites attract, which means that a solute will dissolve more easily in a solvent with different structural features.

The solubility of a given substance in a particular solvent varies with temperature. A concentrated solution contains a relatively large amount of solute in a given amount of solvent

What does it mean if two substances are described as miscible? Multiple choice question. The solute is soluble in the solvent in low concentrations only. The substances are completely soluble in each other at any concentration. The substances are completely soluble in each other at high temperatures only. The solute is soluble in a large amount of solvent only.

The substances are completely soluble in each other at any concentration.

Which of the following options correctly describe the different ways of expressing the concentration of a solution? Select all that apply. Multiple select question. Mass % is only used when both the solute and the solvent are solids. The unit for molality (symbol m) is mol/kg. To calculate mole fraction for a given mass of a reactant or product, the masses of all solution components must be known. Molarity = molofsolute/volumeofsolvent

The unit for molality (symbol m) is mol/kg. To calculate mole fraction for a given mass of a reactant or product, the masses of all solution components must be known.

When solute particles dissolve in a solvent, both solvent-solvent interactions and solute-solute interactions are _____ and solute-solvent interactions are _____. Multiple choice question. broken; formed strengthened; weakened formed; broken weakened; strengthened

broken; formed

The solution process is governed by two factors, _____ and a tendency toward more _____. Multiple choice question. enthalpy; order miscibility; solvation temperature; interactions density; miscibility enthalpy; disorder

enthalpy; disorder

The term "like dissolves like" reflects that fact that two substances will tend to form a solution if they have similar ______. Multiple choice question. sizes intermolecular forces molar masses numbers of atoms

intermolecular forces

An ionic solute dissolved in water would exhibit primarily ______ forces, while a solution of two hydrocarbons such as hexane (C6H14) and octane (C8H18) would exhibit primarily ______ forces. Multiple choice question. dipole-induced dipole; hydrogen bonding ion-dipole; dispersion dipole-dipole; hydrogen bonding hydrogen bonding; dispersion

ion-dipole; dispersion

A(n) ______ solution contains the maximum amount of solute that will dissolve in a given solvent at a particular temperature; a(n) ______ solution contains less than this amount of solute. Multiple choice question. saturated; unsaturated unsaturated; saturated supersaturated; saturated supersaturated; unsaturated

saturated; unsaturated

The measure of the amount of a solute that will dissolve in a given solvent at a particular temperature is called its ______. Multiple choice question. molar mass saturation precipitation solubility

solubility

Consider an ionic substance that is being dissolved in water. If the total enthalpy change associated with breaking the ionic bonds and the water-water interactions is greater than the enthalpy change associated with the formation of water-ion interactions, then ______. Multiple choice question. the process will be exothermic there will be no enthalpy change in the process the process will be endothermic

the process will be endothermic