1. A reacts with B to produce C. If the reaction rate R = - k...
1. A reacts with B to produce C. If the reaction rate R = - k [A]2[B]2. The reaction has an overall reaction order of ___. And the reaction is ___ order with respect to B.
- 4, 2nd; B. 2, 2nd; C. 4, 4th ; D. 2, 4th
- Which of the following is NOT a correct description?
- Knowledge in chemical kinetics can answer the questions like “Is the decay of pollutant A in water much more rapid that the pollutant B’s decomposition?” ;
- Mixing is complete in a batch reactor;
- According to the Henry’s law, the level of dissolved oxygen (DO) in water at chemical equilibrium is increased with the partial pressure of oxygen gas;
- Batch reactor is under a continuous flow state (i.e. flow continuously flows in and leaves from the reactor).
- For our current classroom, if the volumetric size of this
classroom is X and the air volumetric flow rate is Y, X/Y =
_______.
- Length of a side of this room; B. retention time; C. volume of this classroom; D. the velocity of the following air
Homework Answers
3. The endothemic irreversible 2nd order reaction A +B C is carried out in a pressurised...
3. The endothemic irreversible 2nd order reaction A +B C is carried out in a pressurised adiabatic batch reactor. The initial temperature is 120°C and the initial concentrations of both A and B are 2.0 kmol m2 Kinetic studies showed that the reaction rate constant is given by: 6000 k 2 x 105 exp(- m3kmol 1s1 T (8) (a) Derive the mass and energy balances for the reactor. Calculate the conversion achieved and the reactor temperature (b) (12) after 30...
The reaction A ------> B (1) with rate constant, k1= 0.5 min-1 at 400 K is...
The reaction A ------> B (1) with rate constant, k1= 0.5 min-1 at 400 K is to be carried out in an isothermal PFR. However, a second reaction A ----> C (2) with rate constant, k2= 0.1 min-1at 400 K occurs concurrently with reaction (1). The concentration of Ain the feed is CA0= 2 mol dm-3 and the volumetric flow rate of the feed is v0= 4 dm3min-1. (a) Determine the mean residence time, t and the reactor volume, V...
39) What are the units of k in the following rate law? Rate = K[X][Y]1/2 40)...
39) What are the units of k in the following rate law? Rate = K[X][Y]1/2 40) What are the units of k in the following rate law? Rate = k[X]2 41) What is the overall order of the following reaction, given the rate law? X + 2Y → 42 Rate = k[X][Y] A) 3rd order B) 5th order C) 2nd order D) 1st order E) 6th order 42) What is the overall order of the following reaction, given the rate...
PROBLEM 1 The elementary liquid phase irreversible reaction (A + B -> C) is to be...
PROBLEM 1 The elementary liquid phase irreversible reaction (A + B -> C) is to be carried out in a flow reactor. An equimolar feed with A and B enters the reactor at 300K at a volumetric flow rate of 2 L/s, and feed molar concentration of A equal to 0.1 kmol/m3 a. A. Calculate the conversion of A that can be achieved in one 500 Liter Mixed Flow Reactor under adiabatic conditions. b. Calculate the conversion of A that...
PROBLEM 2 The elementary liquid phase irreversible reaction (A+B -> C) takes place in a 1...
PROBLEM 2 The elementary liquid phase irreversible reaction (A+B -> C) takes place in a 1 m² Mixed Flow Reactor with the equimolar mixture of A and B at the volumetric feed flow rate of 0.5 m3/min, the feed concentration of A equal to 1 mol/L, and the feed temperature of 300K. When the reaction takes place under isothermal conditions at 300K the conversion of A is 30%. When the reaction takes place adiabatically the exit temperature is 350K and...
The following elementary gas phase reaction A+2B—>C+D Feed is A/B= 1/3 mol A/I =4/1 (mole basis)...
The
following elementary gas phase reaction
A+2B—>C+D
Feed is A/B= 1/3 mol A/I =4/1 (mole basis)
is to be carried out in an isothermal CSTR. Given that:
T=500C
P=5 atm
Ea=15500cal/gmol
A=1.5e4
K=A*exp^(-Ea/RT)
Qo= 100 L/s
Reactor volume= 20,000L
a) what are the exit molar flow rates? Fa, Fb, Fc, Fd,
Fi
b) what is the exit volumetric flow rate Q?
2. The following elementary irreversible gas-phase reaction: A+2B >C+D Is to carried out in an isothermal CSTR. Given that:...
what will be the molar concentration of each ion in the electrolyte solutions once the reaction...
what will be the molar concentration of each ion in the electrolyte solutions once the reaction reaches equilibrium? (3 marks) 3. An organic compound of unknown structure is being studied. The unknown is determined to have a chemical formula C6H30Br. At 309 K, the unknown decomposes as follows: 2 C6H130Br (aq) C6H120 (aq) + CH140+ (aq) + Br2 (aq) ... continued on the following page. .. At 309 K, the kinetics of the decomposition reaction were studied and the following...
1. Calculate the activation energy, Ea, in kilojoules per mole for a reaction at 73.0 ∘C...
1. Calculate the activation energy, Ea, in kilojoules per mole for a reaction at 73.0 ∘C that has a rate constant of 0.278 s−1 and a frequency factor of 9.74×1011 s−1. Ea= kJ/mol 2. Nitogen dioxide, NO2, is a red-brown gas that is considered an air pollutant. When heated, nitogen dioxide gas decomposes into nitrogen monoxide and oxygen gas, according to the following reaction. 2NO2(g)−⇀↽−2NO(g)+O2(g) A sample of nitrogen dioxide in a sealed vessel was heated to 575 K, and...
5) rate = K[A][B] Question 11 (1 point) The reaction mechanism proposed for the decomposition of...
5) rate = K[A][B] Question 11 (1 point) The reaction mechanism proposed for the decomposition of H202 H2O2 + 12 -> H2O + 10-1 (slow) H2O2 + 10-1 --> H2O + O2 + 12 (fast) Which statement is true? 1) The reaction is second order in 1 2) is an intermediate 3) The reaction is first order in and first order in H2O2. 4) 10 1 is a catalyst. 5) The reaction is zero order in ! Question 12110
1-The rate constant of a chemical reaction was measured at several temperature values and a plot...
1-The rate constant of a chemical reaction was measured at several temperature values and a plot of ln k (on the y-axis) was plotted against 1/T (on the x-axis, temperature was measured in Kelvin). If the slope of the plot was -9.21 x 103 K and the y-intercept was 13.0, what is the activation energy (EA) of the reaction in kJ mol-1? 2-In an enzyme-catalyzed reaction, the rate of the reaction depends on which of the following at very low...
3. The endothemic irreversible 2nd order reaction A +B C is carried out in a pressurised adiabatic batch reactor. The initial temperature is 120°C and the initial concentrations of both A and B are 2.0 kmol m2 Kinetic studies showed that the reaction rate constant is given by: 6000 k 2 x 105 exp(- m3kmol 1s1 T (8) (a) Derive the mass and energy balances for the reactor. Calculate the conversion achieved and the reactor temperature (b) (12) after 30...
39) What are the units of k in the following rate law? Rate = K[X][Y]1/2 40) What are the units of k in the following rate law? Rate = k[X]2 41) What is the overall order of the following reaction, given the rate law? X + 2Y → 42 Rate = k[X][Y] A) 3rd order B) 5th order C) 2nd order D) 1st order E) 6th order 42) What is the overall order of the following reaction, given the rate...
PROBLEM 1 The elementary liquid phase irreversible reaction (A + B -> C) is to be carried out in a flow reactor. An equimolar feed with A and B enters the reactor at 300K at a volumetric flow rate of 2 L/s, and feed molar concentration of A equal to 0.1 kmol/m3 a. A. Calculate the conversion of A that can be achieved in one 500 Liter Mixed Flow Reactor under adiabatic conditions. b. Calculate the conversion of A that...
PROBLEM 2 The elementary liquid phase irreversible reaction (A+B -> C) takes place in a 1 m² Mixed Flow Reactor with the equimolar mixture of A and B at the volumetric feed flow rate of 0.5 m3/min, the feed concentration of A equal to 1 mol/L, and the feed temperature of 300K. When the reaction takes place under isothermal conditions at 300K the conversion of A is 30%. When the reaction takes place adiabatically the exit temperature is 350K and...
The
following elementary gas phase reaction
A+2B—>C+D
Feed is A/B= 1/3 mol A/I =4/1 (mole basis)
is to be carried out in an isothermal CSTR. Given that:
T=500C
P=5 atm
Ea=15500cal/gmol
A=1.5e4
K=A*exp^(-Ea/RT)
Qo= 100 L/s
Reactor volume= 20,000L
a) what are the exit molar flow rates? Fa, Fb, Fc, Fd,
Fi
b) what is the exit volumetric flow rate Q?
2. The following elementary irreversible gas-phase reaction: A+2B >C+D Is to carried out in an isothermal CSTR. Given that:...
what will be the molar concentration of each ion in the electrolyte solutions once the reaction reaches equilibrium? (3 marks) 3. An organic compound of unknown structure is being studied. The unknown is determined to have a chemical formula C6H30Br. At 309 K, the unknown decomposes as follows: 2 C6H130Br (aq) C6H120 (aq) + CH140+ (aq) + Br2 (aq) ... continued on the following page. .. At 309 K, the kinetics of the decomposition reaction were studied and the following...
5) rate = K[A][B] Question 11 (1 point) The reaction mechanism proposed for the decomposition of H202 H2O2 + 12 -> H2O + 10-1 (slow) H2O2 + 10-1 --> H2O + O2 + 12 (fast) Which statement is true? 1) The reaction is second order in 1 2) is an intermediate 3) The reaction is first order in and first order in H2O2. 4) 10 1 is a catalyst. 5) The reaction is zero order in ! Question 12110
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