Chapter 7
Chapter
Atomic Structure and Periodicity
g orbital
dz2 orbital
Electromagnetic Radiation
07_94
Wavelength in meters
10-10
Gamma
rays
X rays
4 x 10-7
10-8 4 x 10-7 7 x 10-7 10-4
Ultraviolet
Visible
10-12
5 x 10-7
Infrared
10-2
1
102
Microwaves
Ra
Dual Nature of Matter
Wave-Particle Duality of Matter
Louis de Broglie (1923) postulated the
wave-particle duality of matter:
P=mv= h
m v = linear
momentum
= de Broglie Wavelength
de Broglie postulated that particles exhibit a wave-like nature with a
wa
Specific Orbit
r=a =0.529
Rradius)
adii
(Bohr
Quantization of Energy
B
Most negative
1
18
2 1
E = 2.178 10 J Z
2
n 2 n
i
f
Bohr Frequency Condition:
n = 1 is ground state (most negative energy)
n> 1 is an excited state
E = h
Absorption vs. Emission
Bo
Quantum Numbers n,l,ml:
n = 1 l = 0 l = 0 therefore ml = 0 Giving 1s or 1,0,0 or 1s orbital
n = 1 has 1 orbital
n = 2 l = 0, 1 l = 0 therefore ml = 0 Giving 2s or 2,0,0 or 2s orbital
l = 1 therefore ml = -1,0,1 Giving 2,1,0 or 2pz orbital
2,1,1 AND 2,1,-
Some Properties of a Liquid
Some
Surface Tension: The resistance to an increase
Surface
in its surface area (strong forces
in
between molecules lead to strong surface
between
tension).
tension).
Capillary Action: Spontaneous rising of a liquid
Capillary
i
Chem 1A Review: Exam I
Wednesday 7/6/11
Summer 11
1. Benzene (C6H6) reacts with oxygen gas to produce carbon dioxide and water.
a. Write a balanced equation for this combustion reaction.
b. If 100 grams of benzene react with excess oxygen, how many grams
Chemical Reaction
Engineering
Assignment 1
Dr Veluri VPS Murthy, Professor
Phone: +606 7989 271 (preferred)
Mobile: +60182321400
e-mail: [email protected]
Chemical Reaction Engineering
2016
1
PROBLEM-1
1.1. Municipal waste water treatment plant. Consider a
1
EKB 2113 MASS
TRANSFER
Lecture 2 - Diffusion
2
Overview
Modes of Mass Transfer
Examples on Modes of MT
Ficks law
Equimolar counter diffusion in gases
3
Modes of mass transfer
Molecular
Diffusion
Gases
Liquid
Solid
Mass
Transfer
Convective
Mass
Trans