Substance A and B react in elementary steps according to the following equations: Step 1: A+B...
Substance A and B react in elementary steps according to the following equations:
Step 1: A+B --> C+D k=0.25M/min
Step 2: D+A --> C+E k=0.0002M/min
a) Determine the equation for the overall reaction.
b) Give the expected rate law for the reaction from the information above.
Homework Answers
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Substance A and B react in elementary steps according to the
following equations:
Step 1: A+B...
Which statement below concerning elementary processes (or steps), the mechanism of a reaction and the overall...
Which statement below concerning elementary processes (or
steps), the mechanism of a reaction and the overall reaction is
correct?
The overall rate law derived from the mechanism must agree with
the observed rate law for the overall reaction.
The rate law for an elementary process can be predicted from
the chemical equation for that process.
The rate law for the rate determining step is directly related
to the rate law for the overall reaction.
All the above statements are either...
Use the generic elementary steps shown to below to answer the following questions. A + BC...
Use the generic elementary steps shown to below to answer the following questions. A + BC + D Elementary Step 1 (slow) A + DC + E Elementary Step 2 (fast) a. Based on the provided elementary steps, but is the net reaction? Select] [Select] 2A+B+D -> 2C+D+E 2A+B --> 2C+E termediates in this reaction? [Select] 2A +B+D -> 2C+E 2A + B --> 2C+D+E C. If step 115 the slow step, what should be the rate law for this...
Which statement is false concerning elementary steps in a reaction mechanism? the rate law can be...
Which statement is false concerning elementary steps in a reaction mechanism? the rate law can be deduced from the stoichiometry of reactants for an elementary step the overall molecularity for an elementary step is the sum of the stoichiometric coefficients for all reactants in that step the rate law for an elementary step must be determined experimentally the rate law for the overall reaction is always the same as the rate law for the slowest elementary step both (c) and...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A B +C Step 2: A+B →D Step 3: 2 A+D → C+E The overall reaction is 4 A 2 C + E. Which species are intermediates in this reaction? A) B and C B) B C) B and D D) D E) C and D
8) A reaction occurs via the following sequence of elementary steps. What is the rate law...
8) A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? very fast slow fast 1st step: A B 2nd step: B+C D 3rd step: D - 2E A) rate = k[E]2 B) rate = k[A] [C] C) rate = k[B][C] D) rate = k[D] E) rate = k[A] [B]
To understand how elementary steps make up a mechanism and how the rate law for an...
To understand how elementary steps make up a mechanism and how the rate law for an elementary step can be determined. Very often, a reaction does not tell us the whole story. For instance, the reaction NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g) does not involve a collision between an NO2NO2 molecule and a COCO molecule. Based on experimental data at moderate temperatures, this reaction is thought to occur in the following two steps: NO2(g)+NO2(g)→NO3(g)+NO(g)NO2(g)+NO2(g)→NO3(g)+NO(g) NO3(g)+CO(g)→CO2(g)+NO2(g)NO3(g)+CO(g)→CO2(g)+NO2(g) Each individual step is called an elementary step. Together, these...
Question 8 Step 1: H,02 + I +10- +H,0 Step 2: H,02 + 10 + H2O...
Question 8 Step 1: H,02 + I +10- +H,0 Step 2: H,02 + 10 + H2O + O2 +I" The mechanism for a chemical reaction is shown above. Which of the following statements about the overall reaction and rate laws of the elementary reactions is correct? The chemical equation for the overall reaction is 2 H202 + I and the rate law for elementary step 2 is rate = k[H,02][10 + 2 H2O + O2 +I , ]. + H2O...
this is all that is given 21. A reaction proceeds by a series of elementary steps...
this is all that is given
21. A reaction proceeds by a series of elementary steps as shown below. The activation energy and heat of reaction are shown for each step. Step No. Activation energy Elementary step A + B → AB Enthalpy of reaction 4 kJ/mol -10 kJ/mol AB + C → ABC + BC 30 kJ/mol +5.2 kJ/mol ABC + B → AB + BC 10 kJ/mol -7.8 kJ/mol a) What is the overall equation for this reaction?...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in a reaction cannot be involved in the rate determining step ii) In the rate equation for the forward reaction of an elementary step, the overall reaction order is equal to the number of reactant molecules in the step iii) To be the rate determining step in a mechanism, an elementary step must be exothermic O A. ii and ill only B. i and iii...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in a reaction cannot be involved in the rate determining step ii) In the rate equation for the forward reaction of an elementary step, the overall reaction order is equal to the number of reactant molecules in the step iii) To be the rate determining step in a mechanism, an elementary step must be exothermic O A. ii and ill only B. i and iii...
Which statement below concerning elementary processes (or
steps), the mechanism of a reaction and the overall reaction is
correct?
The overall rate law derived from the mechanism must agree with
the observed rate law for the overall reaction.
The rate law for an elementary process can be predicted from
the chemical equation for that process.
The rate law for the rate determining step is directly related
to the rate law for the overall reaction.
All the above statements are either...
Use the generic elementary steps shown to below to answer the following questions. A + BC + D Elementary Step 1 (slow) A + DC + E Elementary Step 2 (fast) a. Based on the provided elementary steps, but is the net reaction? Select] [Select] 2A+B+D -> 2C+D+E 2A+B --> 2C+E termediates in this reaction? [Select] 2A +B+D -> 2C+E 2A + B --> 2C+D+E C. If step 115 the slow step, what should be the rate law for this...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A B +C Step 2: A+B →D Step 3: 2 A+D → C+E The overall reaction is 4 A 2 C + E. Which species are intermediates in this reaction? A) B and C B) B C) B and D D) D E) C and D
8) A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? very fast slow fast 1st step: A B 2nd step: B+C D 3rd step: D - 2E A) rate = k[E]2 B) rate = k[A] [C] C) rate = k[B][C] D) rate = k[D] E) rate = k[A] [B]
Question 8 Step 1: H,02 + I +10- +H,0 Step 2: H,02 + 10 + H2O + O2 +I" The mechanism for a chemical reaction is shown above. Which of the following statements about the overall reaction and rate laws of the elementary reactions is correct? The chemical equation for the overall reaction is 2 H202 + I and the rate law for elementary step 2 is rate = k[H,02][10 + 2 H2O + O2 +I , ]. + H2O...
this is all that is given
21. A reaction proceeds by a series of elementary steps as shown below. The activation energy and heat of reaction are shown for each step. Step No. Activation energy Elementary step A + B → AB Enthalpy of reaction 4 kJ/mol -10 kJ/mol AB + C → ABC + BC 30 kJ/mol +5.2 kJ/mol ABC + B → AB + BC 10 kJ/mol -7.8 kJ/mol a) What is the overall equation for this reaction?...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in a reaction cannot be involved in the rate determining step ii) In the rate equation for the forward reaction of an elementary step, the overall reaction order is equal to the number of reactant molecules in the step iii) To be the rate determining step in a mechanism, an elementary step must be exothermic O A. ii and ill only B. i and iii...
Which of the following statements about an elementary process or step is/are correct? 1) Intermediates in a reaction cannot be involved in the rate determining step ii) In the rate equation for the forward reaction of an elementary step, the overall reaction order is equal to the number of reactant molecules in the step iii) To be the rate determining step in a mechanism, an elementary step must be exothermic O A. ii and ill only B. i and iii...
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