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Exam 1
CHEM 122
24
Chemistry
Undergraduate 2
09/09/2010

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Term
A homogenous, molecular mixture of two or more substances
Definition
Solution
Term
A general term referring to the relative amount of solute and solvent in a solution. Expressed in various units.
Definition
Concentration
Term
A solution whose concentration is such that it is or would be in equilibrium with the pure solute.
Definition
Saturated solution
Term
The concentration of the saturated solution of a solute in a solvent. This may be expressed in any concentration units but is often in units such as grams/mL
Definition
Solubility
Term
A solution whose concentration is less than that of the saturated solution.
Definition
Unsaturated solution
Term
A solution whose concentration is greater than that of the saturated solution. This type of solution is unstable with regard to the precipitation of the solute from solution.
Definition
Supersaturated solution
Term
A substance that will, either in the pure liquid state or in solution in a given solvent, conduct an electrical current.
Definition
Electrolyte
Term
(For two component solutions with non volatile solute) the vapor pressure, P, of a solution is equal to the product of the vapor pressure of the pure solvent, Po, and the mole fraction, X1, of the solvent in the solution; thus P=X1Po. All values are taken at the same temperature.
Definition
Raoult's Law
Term
For solutions, the four properties of vapor pressure, boiling point, freezing point, and osmotic pressure are designated as this. They are characterized by the common property that the value of this does not depend on the nature of the solute, only on the concentration of the solute.
Definition
Colligative properties
Term
A term used to refer to mixtures of two liquids to indicated that they are soluble in one another. The general term does not have arbitrary amounts. The term in all proportions indicates that any percentage mixture of the two compounds will form one phase.
Definition
Miscible
Term
A term used to indicate that two liquids will not mix to form one phase but will form two phases. The two phases may not be completely pure one or the other liquid.
Definition
Immiscible
Term
Uniform in composition at all positions in the sample. The concentration this type of mixture is the same at all positions in the mixture.
Definition
Homogeneous
Term
Non-uniform in composition. The concentration will be different at different positions.
Definition
Heterogeneous
Term
The component in a mixture which is present in the largest amount in general. If one component is a liquid and the other is a solid, the liquid is almost always considered this. If both components are liquids or both solids, it is not always easy to decide which to consider this and in principle either can be. A general way of thinking here is that this dissolves the solute.
Definition
Solvent
Term
The component present in smaller amount in a mixture. This dissolves in the solvent.
Definition
Solute
Term
A state in which there is no change in the values of macroscopic properties (such as the concentration of components in the case of a saturated solution in contact with the solute)
Definition
Equilibrium
Term
The number of molar masses of solute in one liter of final solution
Definition
Molarity (M)
Term
The number of molar masses of solute in one kilogram of solvent.
Definition
Molality (m)
Term
The number of gram equivalent weights of solute in one liter of final solution
Definition
Normality (N)
Term
The fraction of the total number of moles in a solution that is due to the particular component in question. The symbol is X, and a subscript is used to indicate the component in question.
Definition
Mole fraction
Term
The fraction of the total weight that is due to the particular component in question. It is calculated by dividing the weight of the component by the total weight. It is the number of grams of the component in question per gram of total solution. It has no symbol.
Definition
Weight fraction
Term
If the weight fraction is multiplied by 100, the result is this. It is the grams of the component in question per 100 grams of total solution.
Definition
Weight percent
Term
If the weight fraction is multiplied by 10^6,the result is a concentration term called this. It is the grams of the component in question per one million grams of total solution.
Definition
Parts per million
Term
The percent of the total volume that is due to a given component. This of A is the volume of A initially added to the mixture divided by the total final volume of the mixture multiplied by 100.
Definition
Volume percent
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