UNIT 1,PROBLEMS
1,A reaction has the stoichiometric equation
A+B=2R,What is the order of reaction?
2,A reaction with stoichiometric equation
has the following rate expression
What is the rate expression for this reaction if the
stoichiometric equation is written as A+2B=2R+S?
SRBA 2121
BAA CCr 5.02?
UNIT 1,PROBLEMS
3,For a gas reaction at 400K the rate is
reported as
(a) What are the units of the rate constant?
(b) What is the value of the rate constant for
this reaction if the rate equation is expressed as
a t m / h,66.3 2AA pdtdp?
h)m o l / ( L,2 AAA kCdtdCr
UNIT 1,PROBLEMS
4.The pyrolysis of ethane proceeds with an
activation energy of about 315000 J,How
much faster is the decomposition at 650℃
than 500℃?
5,A certain reaction has a rate given by
If the concentration is to be expressed in
mol/L and time in hours,what would be the
value and units of the rate constant?
m i nm o l / c m,005.0 32 AA Cr
UNIT 1,PROBLEMS
6,On typical summer days fields crickets nibble,
jump,and chirp now and then,But at night when
great numbers congregate chirping seems to
become a serious business and the chirp rate
becomes quite regular,In 1897 Dolbear reported that
not only was it regular but that the rate was
determined by the temperature as given by
(number of chirps in 15 secs)+5=(temperature,℃ )
Assuming that the chirping rate is a direct measure of
the metabolic rate,find the activation energy of these
crickets in the temperature rang of 10 to 30℃,