solution of Nonelectrolytes

Question 1

a dissolved substance especially a component of a solution present in
smaller amount than the solvent

Answer 1

Solute

Question 2

The solutes (whether gases, liquids, or solids) are divided into two main
classes

Answer 2

non-electrolytes and electrolytes.

Question 3

are substances that do not yield ions when dissolved in water and therefore do not conduct an electric current through the solution

Answer 3

Nonelectrolytes

Question 4

are substances that form ions in solution, conduct the electric current and show apparent irregular colligative properties

Answer 4

Electrolytes

Question 5

Material substances can be mixed together to form a variety of pharmaceutical mixtures (or dispersions) such as

Answer 5

true solutions,
colloidal dispersions,
and coarse dispersions.

Question 6

mixture of two or more components that form a homogenous molecular dispersion, the particles are smaller than 1 nanometer

Answer 6

true solution

Question 7

represents a system having a particle size intermediate between that of a true solution and a coarse dispersion roughly 1 to 500 nm.

Answer 7

colloidal dispersion

Question 8

the diameter of the particles in emulsions and
suspensions for the most part being larger than ~500 nm (0.5 µm)
In a binary (two component) solution

Answer 8

coarse dispersion

Question 9

Electrolytes may be subdivided into strong electrolytes and weak electrolytes depending on

Answer 9

on whether the substance is completely or only partly ionized in water.

Question 10

The physical properties of substances can be classified as

Answer 10

colligative, additive, and constitutive.

Question 11

Colligative properties depend mainly on

Answer 11

n the number of particles in a solution.

Question 12

The colligative properties of solutions are

Answer 12

osmotic pressure,
vapor pressure lowering, freezing point depression,
and boiling point

Question 13

Additive properties depend on

Answer 13

the total contribution of the atoms in the molecule or on the sum of the properties of the constituents in a solution

Question 14

Any physical or chemical property that depends on the constitution or structure of the molecule.

Answer 14

Constitutive properties

Question 15

Both molarity and normality have the disadvantage of changing value with temperature because

Answer 15

of the expansion or contraction of liquids

Question 16

Colligative Properties are properties of a liquid that change when a solute is added. The magnitude of the change depends on

Answer 16

the number of solute particles in the solution, NOT on the identity of the solute particles.

Question 17

The vapor pressure of a liquid is determined by

Answer 17

how easily its molecules are able to escape the surface of the liquid and enter the gaseous phase.

Question 18

Liquids that do not evaporate easily

Answer 18

have a lower vapor pressure.