Summary Chapter 18 - Rates

ORDER of REACTION

E SHORT HAND for CO N C
R Ate me A S in moiam 35
or E D
RO R PRO P O R T I ON AL i 0 co Nc Of
PART 1 CU LA R REA Ci A Ni R A l s t D to Pow C R

RA t e a A

power ORDER O f r r N f or REA Ci A Ni
i n r 1N D I f f e rent react a N t s bi f f E RENT
ORDERS
common or D E R S O l 2

ZERO O R D CR

CON C REA C TA N T N O E f f E c t o n RA t e
0
RA t E a A
in 0 ORDER R T N
ANY NO no
co N c D O ES N o t i Nti u e Nce r a t e

no on its

first 0 R DE Ri

RA t E a A
i n ti n s t on D E R Ri Ns
if conc A x 2 na t t in CREA se s B Y
factor 2 2
if CONC A x 3 na t t in CREA se s B Y
c Act OR 3 3

s t c o N D or D E R

RAT E A
IN SECOND O R D ER R E Action
if conc A x 2 na t t in CREA se s B Y
factor 2 a
if conc A x 3 na t t in CREA se s B Y
factor 3 9

RA t E t QN t Lo n s t AN T

O RD e r Wi t H n cs p e c T or D tr w i t H
to A b
m
f r E s p Ect i 0 B
R A T E KIA B
g PR O P or T 10
RA t t Corr s t AN t NA L i t y
c O N S TA N T

, OVE R AL L O RD t R

a l v es Ort a AL l t f f E C T of co NC of
AL L REA C 1 ANTS ON RAT E

O v E RAL L o n D e n sum of ORDERS WITH
RESPECT to c A CH
REA C TA N T

SO f OR RATE k AJMER

OVER AL L O RD e r m t n
9
v w i t s of R Ai E Con s t A ni k

DEPENDS ON NO CO N C terms
R E Arri A Na E E Q N TO MAKE K SUBJECT
S U B si U Ni t s to Express 10 N for a
CA NCE L Lo m Mon u N i t s t w r l it 0 N
SI N ALE L I NC

OR D E RS f Rom e xp E r m c N T AL R E S UL t s

DE T En min t D mo n l To Ri N 4 HOW PHYSICAL
QUANTITY Of Re a C T A N T CHA N a c s O ve r
T l me
or D c r mo i D i r Ect LY to v ND f n o m cQ N
WHEN com p a ri n a effect of C O NC ON
RATE RATE must BE MEA s v r t D A T
S AME i l ME

EXAMPLE QUESTION




AL WA Ys s t Are c x P t r l ME n t s corn p a ri n a