Physical Chemistry

Question 1

A branch of chemistry that deals with the study of the structures and physical properties of matter with the laws of chemical interaction and the theories governing these interaction

Answer 1

Physical chemistry

Question 2

Involve the kinetic theory of gases and its application to solution and Debye-Heckel theory of electrolytes

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Newtonian Mechanics and Electrostatics

Question 3

Involved motion of individual molecules and individual electronic, spin, vibrational, and rotational energy transitions

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Microscopic

Question 4

Involves measurement of properties of matter as a bulk such as pressure, temperature, volume and absorbance

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Macroscopic

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It results from a mic true of neutral atoms, free electrons and charged ions usually s fluid but due to charged particles present, it responds to and generates electromagnetic forces

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Plasma

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Special state of matter in which atoms in a confined gas act together like a single giant particle after being cooked cryogenically to a temperature near absolute zero

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Bose-Einstein Condensate

Question 7

Refers to the physical state of gas specified in terms of its physical properties like volume, pressure, temperature and number of moles

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State of a system

Question 8

In the kinetic molecular theory, gases are considered to be composed of minute discrete particles called

Answer 8

Molecules

Question 9

The molecules within a container are believed to be ceaseless chaotic motion during which they collide with each other and with the walls of the container

Answer 9

Kinetic molecular theory

Question 10

Inasmuch as the pressure of a gas within a container does not vary with time at any given temperature and pressure, the molecular collision must involved no energy loss due to fiction.

Answer 10

Kinetic molecular theory

Question 11

In the kinetic molecular theory, all molecular collisions are considered to be perfectly

Answer 11

Elastic

Question 12

The absolute temperature is s quantity proportional to the average kinetic energy of all molecules in a system

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Kinetic molecular theory

Question 13

At relatively low pressures, the average distances between molecules are large compared with molecular diameters and hence the attractive forces between molecules may be considered negligible

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Kinetic molecular theory

Question 14

The vapor density method of the determination of molecular weight is developed by

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Jean Baptiste Andre Dumas

Question 15

The regnant method of the determination of molecular weight is developed by

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Henry victor Renault

Question 16

As soon as equilibrium is established between the liquid and vapor,mother pressure exerted by the vapor is known as the

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Saturated vapor pressure

Question 17

When the critical point is reached, there is or no distinction between the liquid and the vapor

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No

Question 18

The resistance offered by the fluid to the flow of another fluid

Answer 18

Viscosity

Question 19

It is produced by the shearing effect of moving one layer of the fluid past another

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Viscosity

Question 20

Viscosity increases with increasing temperature when it come to

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Gases

Question 21

The pouiseuille equation is also known as

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Ostwald viscosimeter

Question 22

This law if applicable with the radius of the falling body is greater than the distance between the molecules of the liquid

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Stokes law

Question 23

The du Nouy Ring Method uses a device called

Answer 23

Tension enter

Question 24

The tensiometer was developed in

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Rockefeller institute for medical research

Question 25

Constituent structural units are arranged in a definite geometrical configuration characteristic of a substance. It melts sharply at constant and definite temperature

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Crystalline

Question 26

Solids which does not show definite configurational arrangement and are not considered as true solids but highly supercooled liquids with very high viscosity. It melts gradually over a temperature interval

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Amosphous

Question 27

The amount of heat evolved during crystallization or solidification per mile of substance at a given temperature and pressure

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Heat of crystallization

Question 28

The reverse of heat of crystallization which is the amount of heat that must be absorbed in the transition of one mole of solid to liquid

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Heat of fusion

Question 29

A study dealing with the geometry, properties and structure of crystals and crystalline substances

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Crystallography

Question 30

In a crystal system, there may be — crystal forms

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230

Question 31

Crystal systems may be groups into — classes according to symmetry

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32

Question 32

Existence of substanc s in more than one modification

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Polymorphism

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Polymorphism occurring in elements

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Allotropy

Question 34

The transformation from one form to another takes place at a temperature known as transition temperature of transition point

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Allotropy

Question 35

It produces electricity as a result of spontaneous reactions occurring inside it where the cathode has a higher potential than the anode

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Galvanic cell

Question 36

Non-spontaneous reaction is driven by an external source of current. They have a common electrolyte and no salt bridge

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Electrolytic cell

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Reduction occurs in the — and oxidation occurs in the —

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Cathode

Anode

Question 38

In electrolytic cells, the anode and cathode is

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+

-

Question 39

In galvanic cells, the anode and cathode is

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-

+

Question 40

A reduction brought about by the passage of a direct current through a solution of an electrolyte

Answer 40

Electrolysis

Question 41

The phenomena that occurs in electrolytic conduction

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Mass movement of ions

Occurring of Oxidation-Reduction Reaction

Question 42

The mass of a substance involved in the reaction at the electrode is proportional to the quality of electricity passed though the solution

Answer 42

Faraday’s Law

Question 43

Governs the temperature dependence of pressure in a two-phase, one component system

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Chaperoning equation

Question 44

Gives the r lotion ship between pressure and temperature for a two-phase, one-component system assuming that the vapor phase is ideal and the molar volume of the condensed phase is negligible compared to that of the vapor phase

Answer 44

Clausius-Clapeyron Equation

Question 45

Solutions with heat of mixing equal to zero and the volume of the solution is the sum of the volumes of the components of the solution

Answer 45

Ideal solution