Chapter 12 Solutions

Soluble

Capable of being dissolved

Solution

A homogenous mixture of 2 or more substances in a single phase

Solute

Substance dissolved in a solution

Solvent

The dissolving medium in a solution

Suspension

Particles in a solvent are so large (>1000 nm) that they settle out unless the mixture is constantly stirred or agitated

Colloids

Particles that are intermediate in size (1-1000 nm) between these in solutions and suspensions

Tyndall effect

Scattering of light by colloidal particles dispersed in a transparent medium

Electrolyte

Substance that dissolves in water to give a solution that conducts electric current

Nonelectrolyte

Substance that dissolves in water to give a solution that doesn't conduct electric current

Solution equilibrium

State in which the rate of dissolution equals rate of crystalization

Saturated solution

max amount of dissolved solute

Unsaturated solution

Less solute than a saturated solution

Supersaturated solution

Solution that contains more dissolved solute than a saturated solution contains under the same conditions

Solubility

The amount of that substance required to form a saturated solution with a specific amount of solvent at a specified temperature

Hydration

Solution process with water as the solvent

Immiscible

Liquids that aren't soluble in each other

Miscible

Liquids that dissolve freely in one another

Henry's Law

Solubility of a gas in a liquid is directly proportional to the partial pressure of that gas on the surface of the liquid

Effervescence

The rapid escape of a gas from a liquid in which it is dissolved

Solvated

A solute particle that is surround by solvent molecules

Enthalpy of Solution

The net amount of energy absorbed as heat by the solution when a specific amount of solute dissolves in a solvent

Concentration

A solution is a measure of the amount of solute in a given amount of solvent or solution

Molarity

The number of moles of solute in one liter of solution

Molality

Concentration of a solution expressed in moles of solute per kilogram of solvent

ionize in water

Molecules whose water solutions can carry electric currentionize in water

Using large pieces of the solid

Which of the following does not increase the rate at which a solid dissolves in water?

has a positive enthalpy of solution

When the energy released by the formation of solvent-solute attractions is greater than the energy absorbed by overcoming solute-solute and solvent-solvent attractions, the dissolving process

press to gas-liquid solubility

Henry's law relates

more frequent and more energetic

Raising the temperature of a solvent causes solvent-solvent collisions to become

not related to solubility

The rate at which a solid dissolves is

escape of a gas from a gas-liquid solution

Effervescence is the

unsaturated and concentrated

A solution that contains a large concentration of solute but can hold even more solute

decreases

As temperature increases, the solubility of gases in liquids generally

nonpolar

A substance that does not dissolve in a polar solvent is probably

ions

To carry an electric current, a solution must contain

particle size

Mixtures are classified according to their

Exothermic processes

Dissolution processes with negative enthalpies of solution are

Solvated

A solute molecule that is surrounded by solvent molecules

Increase

The solubility of CuCl2(s) would _________ with increasing solvent temperature

alloy

A(n) _________ is a solution whose solute and solvent are both solid metals