(a)
Interpretation: The energy diagram for the concerted reaction with
Concept introduction: The reactions in which product are formed by the breaking and making of bonds in a single step are known as concerted reactions. The activation energy
(b)
Interpretation: The energy diagram for a two-step reaction,
Concept introduction: The reactions in which product are formed by the breaking and making of bonds in a single step are known as concerted reactions. The activation energy
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Organic Chemistry (6th Edition)
- Consider the following reaction: (a) The rate law for this reaction is first order in NO₂(g) and first order in O3(g). What is the rate law for this reaction? O Rate = k [NO₂(g)] [03(9)] Rate = k [NO₂(g)]² [03(9)] O Rate = k [NO₂(g)] [03(9)]² O Rate = k [NO₂(g)]² [03(g)]² Rate = k [NO₂(g)] [03(g)]³ Rate = k [NO₂(g)]4 [03(9)] (b) If the rate constant for this reaction at a certain temperature is 73200, what is the reaction rate when [NO₂(g)] = 0.973 M and [O3(9)] = 1.42 M? Rate = 2 NO₂(g) + 03(g) → N₂05(9) + O₂(g) M/s. Rate = (c) What is the reaction rate when the concentration of NO₂(g) is doubled, to 1.95 M while the concentration of O3(g) is 1.42 M? M/sarrow_forward(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion.Reaction rates increase with increasing temperature.The slowest step in a reaction is called the rate-determining step.Catalysts increase reaction rates.The fastest step in a reaction is called the rate-determining step.As a reaction progresses its rate goes down.Reaction rates can show little change as masses of solid reactants increase.arrow_forward(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. The fastest step in a reaction is called the rate-determining step. As a reaction progresses its rate goes up. The rate of a reaction is independent of temperature. As a reaction progresses its rate goes down. Reactions involving very unstable combinations of chemicals have small rate constants. O Reaction rates decrease with increasing temperature. xarrow_forward
- The rate law for the reaction NO₂ (g)+CO(g) → NO(g)+CO₂ (g) is rate k[NO₂]² ; one possible mechanism is shown on p. 717.(a) Draw a reaction energy diagram for that mechanism, giventhat ΔH°overall =-226 kJ/mol.(b) Consider the following alternative mechanism:Is the alternative mechanism consistent with the rate law? Isone mechanism more reasonable physically?arrow_forwardFor the reaction ABC + D⇌ AB +CD, ΔHrxn°=-55 kJ/mol and Ea(fwd)=215 kJ/mol. Assuming a one-stepreaction, (a) draw a reaction energy diagram; (b) calculate Ea(rev);and (c) sketch a possible transition state if ABC is V-shaped.step, (a) draw a reaction energy diagram; (b) calculate ΔHrxn°;and (c) sketch a possible transition statearrow_forward(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. The fastest step in a reaction is called the rate-determining step. As a reaction progresses its rate goes up. The rate of a reaction is independent of temperature. As a reaction progresses its rate goes down. Reactions involving very unstable combinations of chemicals have small rate constants. Reaction rates decrease with increasing temperature.arrow_forward
- = ○ KINETICS AND EQUILIBRIUM Drawing the reaction energy diagram of a catalyzed reaction Sketch a qualitative reaction energy diagram for a chemical reaction with and without a catalyst. Assume the uncatalyzed reaction is exothermic. Note: Because the sketches are only qualitative, the energies in them don't have to be exact. They only have to have the right relationship to each other. For example, if one energy is less than another, that fact should be clear in your sketch. energy Uncatalyzed reaction reactants Ea reaction coordinate products energy Catalyzed reaction reactants Ea reaction coordinate 0/3 productsarrow_forward(a) Select all of the correct statements about reaction rates from the choices below. 1.The lower the rate of a reaction the longer it takes to reach completion.2 The rate of a reaction is independent of temperature.3 Slow reactions can be speeded up by raising the temperature.4. Reaction rates increase with increasing temperature.5. Solid catalysts do not affect reaction rates.6. Reactions involving very unstable combinations of chemicals have large rate constants.7. A balanced chemical reaction is necessary to relatearrow_forward(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. As a reaction progresses its rate goes up. As a reaction progresses its rate goes down. Reactions involving very unstable combinations of chemicals have small rate constants. Reaction rates increase as reactant concentrations decrease. Reaction rates always increase as masses of solid reactants increase. A balanced chemical reaction is necessary to relate the rate of disappearance of a reactant to the rate of appearance of a product.arrow_forward
- The conversion of (CH3)3CI to (CH3)2C=CH2 can occur by either a onestepor a two-step mechanism, as shown in Equations [1] and [2]. Question: Assume Equation [1] represents an endothermic reaction and draw an energy diagram for the reaction. Label the axes, reactants, products,Ea, and ΔHo. Draw the structure for the transition state.arrow_forwardDraw the appropriate fishhook arrows for the following reaction, and label each step with one of the following (homolytic bond cleavage, addition to a pi bond, hydrogen abstraction, halogen abstraction, elimination, coupling): ·Br: Н— Вг -Br Br -Br ·Br:arrow_forward2:43 Question 8 of 13 The Haber Process: N₂ + 3H₂ → 2NH3 is an important industrial route for the production of ammonia. However, the reaction does not occur fast enough at room temperature to be useful. What could be done to increase the rate of this reaction the most? A) Decrease the temperature B) Add a catalyst C) Increase the temperature Submit D) Decrease the temperature and add a catalyst E) Add a catalyst and increase the temperature Tap here or pull up for additional resourcesarrow_forward
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