Homework Answers
Add Answer to:
2.) An important decay channel of the atmospheric trace gas methane (CH4) is via the reaction...
Methane is a greenhouse gas and it is predicted to have a large global warming impact....
Methane is a greenhouse gas and it is predicted to have a large global warming impact. Methane is primarily removed by reaction with hydroxyl radical (OH). OH + CH4 → H2O + CH3 Its activation energy is determined to be 27.2 kJ/mole and rate constant for kch4= 4.75x10-14 molecule cm sec1 at 0.00 °C. Assuming typical OH concentration in troposphere is 1.0x106 molecules cm A. Determine the atmospheric lifetime of CH4 at 0 °C B. Determine the rate constant at...
Methane (CH4) and oxygen (O2) react to form formaldehyde (CH2O) (reaction #1), with a competing side...
Methane (CH4) and oxygen (O2) react to form formaldehyde (CH2O) (reaction #1), with a competing side reaction (#2) in which methane and oxygen form carbon dioxide (CO2): CH4(v) + O2(g) -> CH2O(v) + H2O(l) (reaction #1) CH4(v) + 2O2(g) -> CO2(g) + 2H2O(l) (reaction #2) A fresh feed of an equimolar gas mixture of CH4 and O2 is combined with a recycle stream and fed to a reactor. The single-pass conversion of CH4 is 30% and the selectivity of CH2O...
1. The second-order rate constant for self-reaction of hydroxyl radicals 2 OH → H2O + O...
1. The second-order rate constant for self-reaction of hydroxyl radicals 2 OH → H2O + O has the value 1.0786E9 M-1·s-1 at 360.0 K. Compute the half-life of OH radicals at this temperature if the initial concentration is 6.74E-6 M. 3. Calculate the initial rate of a first-order reaction if the concentration of reactant is 0.37 M and the half-life is 4.48 s. Enter the correct numerical value to 2.0% precision. Express scientific notation like 4.29E-15 M·s-1 4. Cyano...
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to...
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to the atmosphere through natural and anthropogenic processes. The following table shows the most current understanding of the sources and sinks of CH4 a. Calculate the atmospheric burden of CHs in Tg (1 Tg 10g) in the troposphere with a global average mixing ratio of 1.782 ppmv. Tropospheric air has an average density of 0.71 kg m3. The Standard Atmosphere Calculator (http://www.digitaldutch.com/atmoscalc/) may be of...
The following data were obtained for the reaction of methane with oxygen: CH4(g) + 202(g) CO2(g)...
The following data were obtained for the reaction of methane with oxygen: CH4(g) + 202(g) CO2(g) + 2H20(1) → time(min)[CH4l (mol/L) 0 10 20 30 0.050 0.030 0.020 0.015 0.020 a) How many moles of CO2 are produced for each mole of CH4 that is used up? b) What concentration of CH4 is used up after 10 minutes? c) What is the concentration of carbon dioxide produced after 20 minutes? d) Write an equation for reaction rate in terms of...
The gas phase reaction OH(g) + CH4(g) → H2O(g) + CH(g) is second order overall and...
The gas phase reaction OH(g) + CH4(g) → H2O(g) + CH(g) is second order overall and first order in both reactants. The initial rate of appearance (measured at constant volume and temperature) of HO as a function of temperature is given in the table below. The initial concentration of OH and CH, is 0.500 mol m23. (a) Calculate the Arrhenius parameters for the rate constant. (b) Calculate the initial rate and concentration of OH and H,O after 1 ms at...
41 The following data was experimentally obtained for the reaction: 2 of 2 (CH3)3CBr + H2O...
41 The following data was experimentally obtained for the reaction: 2 of 2 (CH3)3CBr + H2O → (CH3)3COH + HBr t(h) (CH3)2CBr (mol/L) 0 10.39 x 102 3.15 8.96 x 102 6.20 7.76 x 102 10 6.39 x 102 18.30 3.53 x 102 30.80 2.07 x 102 a) Make the appropriate graphs and from them determine the order of reaction in relation to (CH3),CBr. In other words, the rate law expression will be like: Rate = k [(CH3)3CBr]" By concluding...
#5 & 6 Questions 3-6: lowing data were obtained for the reaction: 2NO g) + Odg)→...
#5 & 6
Questions 3-6: lowing data were obtained for the reaction: 2NO g) + Odg)→ 2NO2(g) Concentrations are "mol/L" and rates are in "(mol/L)Ys" INOlo 1.0 x 10-3 1.0 × 10-3 2.0 × 10-3 02]o 1.0 × 10-3 2.0 x 103 1.0 x 10-3 Initial Rate 2.0 × 10-5 4.0 × 10-5 8.0 x 10- 3. Consider the differential rate law, r kNoTO.], how do we determine the reaction o m? A. By educated guess B. By using the...
1. For the reaction, CO, (g) 4 H2 (g) measured: CH4 (g) 2 HO (g), the following kinetic data are ...
1. For the reaction, CO, (g) 4 H2 (g) measured: CH4 (g) 2 HO (g), the following kinetic data are HJ 0.00500 M 0.00500 M 0.00250M 0.0100 M CO.] 0.00250 M 0.00750 M 0.00750 M 0.00250 M Temperature 500 K 500 K 500 K 450 K Rate 5.2 x 10 M/s 1.6 x 103 M/s 2.1 x 104 M/s 2x 10 M/s Based on this data, a) determine the rate law for the reaction (4 pts), b) calculate the rate...
6 The decomposition of ozone in the upper atmosphere is catalyzed by NO. The overall reaction...
6 The decomposition of ozone in the upper atmosphere is catalyzed by NO. The overall reaction and rate law are: rate k[O][NO] Os(g)+O(g)+20;(g); Write a possible mechanism that is consistent with rate law and identify an intermediate in the reaction. 7. A possible mechanism for the iodide ion catalyzed decomposition of hydrogen peroxide in aqueous solution is: -slow H2O:(aq) +I(aq)H;O(1) + 0I°(aq) -fast H20:(aq) +Or(aq)H:O()) +02(g)+l'(aq) What is: iv) the catalyst? iv) the intermediate ii) the rate law i) the...
Methane is a greenhouse gas and it is predicted to have a large global warming impact. Methane is primarily removed by reaction with hydroxyl radical (OH). OH + CH4 → H2O + CH3 Its activation energy is determined to be 27.2 kJ/mole and rate constant for kch4= 4.75x10-14 molecule cm sec1 at 0.00 °C. Assuming typical OH concentration in troposphere is 1.0x106 molecules cm A. Determine the atmospheric lifetime of CH4 at 0 °C B. Determine the rate constant at...
1 of 2 GEOL 3382/6334 Atmospheric Chemistry Problem Set #2 1. Methane (CH4) is emitted to the atmosphere through natural and anthropogenic processes. The following table shows the most current understanding of the sources and sinks of CH4 a. Calculate the atmospheric burden of CHs in Tg (1 Tg 10g) in the troposphere with a global average mixing ratio of 1.782 ppmv. Tropospheric air has an average density of 0.71 kg m3. The Standard Atmosphere Calculator (http://www.digitaldutch.com/atmoscalc/) may be of...
The following data were obtained for the reaction of methane with oxygen: CH4(g) + 202(g) CO2(g) + 2H20(1) → time(min)[CH4l (mol/L) 0 10 20 30 0.050 0.030 0.020 0.015 0.020 a) How many moles of CO2 are produced for each mole of CH4 that is used up? b) What concentration of CH4 is used up after 10 minutes? c) What is the concentration of carbon dioxide produced after 20 minutes? d) Write an equation for reaction rate in terms of...
The gas phase reaction OH(g) + CH4(g) → H2O(g) + CH(g) is second order overall and first order in both reactants. The initial rate of appearance (measured at constant volume and temperature) of HO as a function of temperature is given in the table below. The initial concentration of OH and CH, is 0.500 mol m23. (a) Calculate the Arrhenius parameters for the rate constant. (b) Calculate the initial rate and concentration of OH and H,O after 1 ms at...
41 The following data was experimentally obtained for the reaction: 2 of 2 (CH3)3CBr + H2O → (CH3)3COH + HBr t(h) (CH3)2CBr (mol/L) 0 10.39 x 102 3.15 8.96 x 102 6.20 7.76 x 102 10 6.39 x 102 18.30 3.53 x 102 30.80 2.07 x 102 a) Make the appropriate graphs and from them determine the order of reaction in relation to (CH3),CBr. In other words, the rate law expression will be like: Rate = k [(CH3)3CBr]" By concluding...
#5 & 6
Questions 3-6: lowing data were obtained for the reaction: 2NO g) + Odg)→ 2NO2(g) Concentrations are "mol/L" and rates are in "(mol/L)Ys" INOlo 1.0 x 10-3 1.0 × 10-3 2.0 × 10-3 02]o 1.0 × 10-3 2.0 x 103 1.0 x 10-3 Initial Rate 2.0 × 10-5 4.0 × 10-5 8.0 x 10- 3. Consider the differential rate law, r kNoTO.], how do we determine the reaction o m? A. By educated guess B. By using the...
1. For the reaction, CO, (g) 4 H2 (g) measured: CH4 (g) 2 HO (g), the following kinetic data are HJ 0.00500 M 0.00500 M 0.00250M 0.0100 M CO.] 0.00250 M 0.00750 M 0.00750 M 0.00250 M Temperature 500 K 500 K 500 K 450 K Rate 5.2 x 10 M/s 1.6 x 103 M/s 2.1 x 104 M/s 2x 10 M/s Based on this data, a) determine the rate law for the reaction (4 pts), b) calculate the rate...
6 The decomposition of ozone in the upper atmosphere is catalyzed by NO. The overall reaction and rate law are: rate k[O][NO] Os(g)+O(g)+20;(g); Write a possible mechanism that is consistent with rate law and identify an intermediate in the reaction. 7. A possible mechanism for the iodide ion catalyzed decomposition of hydrogen peroxide in aqueous solution is: -slow H2O:(aq) +I(aq)H;O(1) + 0I°(aq) -fast H20:(aq) +Or(aq)H:O()) +02(g)+l'(aq) What is: iv) the catalyst? iv) the intermediate ii) the rate law i) the...
Most questions answered within 3 hours.
-
Ammonia will decompose into nitrogen and hydrogen at high
temperature. An industrial chemist studying this reaction...
asked 1 minute ago -
10. Complete the table below
only using hexadecimal numbers:
AL CODE
EBX
EAX
[EAX]
mov eax,...
asked 19 minutes ago -
trust is best established through the combination of ------and
------- .
1. magnanimity and justice
2....
asked 33 minutes ago -
Blood pressure is normally taken on the upper arm at the level
of the heart. Suppose,...
asked 32 minutes ago -
Suppose that the satellite around the earth has an orbit that is
24 KM larger in...
asked 36 minutes ago -
Calculate the [OH (aq)] in limes which have a [H3O*(aq)] of 1.3 x
10 mol/L
asked 34 minutes ago -
A nozzle with a radius of 0.250 cm is attached to a garden hose
with a...
asked 45 minutes ago -
PLEASE do not use any loops for the program; only recursion is
allowed
4. Write a...
asked 54 minutes ago -
Please help me with me. I did the first part to write the operations but in...
asked 51 minutes ago -
Use Cryptool to find the Cryptographic SHA-1 hash value of the
string "abc". The calculator is...
asked 55 minutes ago -
You are attempting to calculate a firm’s free cash flow to
equity. You know the following...
asked 1 hour ago -
the following reaction occurs in a balloon containing
N2O2 gas
N2O4(g)=2NO2(g)
will the volume of the...
asked 2 hours ago