Which of the following parameters would be different for a
reaction carried out in the presence...
Which of the following parameters would be different for a
reaction carried out in the presence of a catalyst, compared with
the same reaction carried out in the absence of a catalyst?
The reaction of CH4 is carried out at a different temperature
with an initial concentration of [CH4] = 9.9×10−2 M . At
equilibrium, the concentration of H2 is 2.0×10−2 M
2CH4(g)⇌C2H2(g)+3H2(g)
whats the equilibrium constant
An elementary reaction A+B C+D is to be carried out in a
non-ideal CSTR which has both bypassing and a stagnant region in
this reactor. The measured reactor volume is 1.0 m3 and the flow
rate to the reactor is 0.1 m3/min. The reaction rate constant is
0.28 m3/kmol.min. The feed is equimolar in A and B with an entering
concentration of A equal to 2.0 kmol/m3 k. Calculate the conversion
that can be expected in this reactor if...
The PCR reaction will be carried out with the following cycle
conditions: 95 degrees C for 45 seconds, 65 degrees C for 45
seconds, and 72 degrees C for 1 minute 45 seconds. Which of these
three temperatures represents the annealing step?
72? degrees
The minimal amount of time required for one of these steps varies
depending upon the D1S80 allele that is being amplified. Which of
these three temperatures represents this step?
____ degrees
When the following reaction was carried out, the student
obtained 5 g of CO2. If the student started with 10 g of
CH4 and 10 g of O2, what is the % yield of
the reaction?
CH4 + 2 O2 --> CO2 + 2
H2O
When the following reaction was carried out, the student
obtained 5 g of CO2. If the student started with 10 g of
CH4 and 10 g of O2, what is the % yield of
the reaction?
CH4 + 2 O2 --> CO2 + 2
H2O
The rate of a chemical
reaction is not dependent on which of the following parameters.
the balanced equation
for the reaction
temperature
orientation of
molecules during collisions
presence or absence of
a catalyst
concentration of
reactants involved in the rate-determining step.
energy of
activation
The reaction N2(g)+O2(g)⇌2NO(g) is carried out at a temperature
at which Kc = 0.055. The reaction mixture starts with only the
product, [NO] = 0.0200 M, and no reactants.
Part A
Find the equilibrium concentrations of N2 at equilibrium.
Part B
Find the equilibrium concentrations of O2 at equilibrium.
Part C
Find the equilibrium concentrations of NO at equilibrium.
Consider the following reaction:
CO(g)+2H2(g)⇌CH3OH(g)
The reaction between
CO
and
H2
is carried out at a specific temperature with initial
concentrations of
CO
= 0.32
M and
H2
= 0.53
M. At equilibrium, the concentration of
CH3OH
is 0.16
M.
Part A
Find the equilibrium
constant at this temperature.
Express
your answer using two significant figures.
The following reversible gas-phase reaction is carried out in a
10 L batch reactor.
A <->C -rA = CA – 0.5CC [mol/(L h)]
Determine the pressure, temperature, and gas phase composition
(mole fractions) in the reactor after 1
hour of operating adiabatically given the following initial
conditions and physical properties and the
assumption of ideal gas behavior:
P0 = 100 kPa, yA0 = 0.5, yC0 = 0.1, yinert=0.4, T0 = 500 K.
cpA = cpC = 10 J/mol K, cpinert...
The elementary irreversible gas phase reaction A --> B + C is
carried out in a PFR packed with catalyst. Pure A enters the
reactor at a volumetric flowrate of 20 dm3 /s at a
pressure of 10 atm and 450K.
CpA=40 J/mol.K HfA=-70 kJ/mol
(TR=273 K)
CpB=25 J/mol.K HfB=-50 kJ/mol
CpC=15 J/mol.K HfC=-40 kJ/mol
k = 0.133 exp ( E/R*[ 1/450 ? 1/T ] ) dm3 kg cat. s
with E = 31.4 kJ/mol
a) Plot the conversion and...