(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
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
ORGANIC CHEMISTRY
- (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_forwardDraw an energy diagram for each reaction. Label the axes, the starting material, product, transition state, ΔH°, and Ea. a. a concerted reaction with ΔH° = –80 kJ/mol and Ea = 16 kJ/mol b. a two-step reaction, A → B → C, in which the relative energy of the compounds is A < C < B, and the step A → B is rate-determiningarrow_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
- The rate law of a reaction is given below.From the given rate law, what will happen to the reaction time and reaction rate if the concentration of one of the reactants is doubled while keeping everything the same? why?Also, why the starch solution used as an indicator in an experiment turned blue at the end of the reaction?arrow_forwardThe 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_forwardGiven a reaction between an organic molecule, denoted as A, and NaSH, we observe the following observations. Using the observations, write a rate law for the reaction.(a) The rate triples when the concentration of [A] is tripled and the concentration of [NaSH] is held constant.(b) The rate is decreased when the concentration of [A] is doubled and the concentration of [NaSH] is cut by a factor of 3.(c) The rate doubles when the concentration of [A] is cut in half and the concentration of [NaSH] is quadrupled.(d) The rate increases with an increase in temperature. write the rate lawarrow_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_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_forwardUse the following equations (picture) to determine the deltaH ° for the target reaction. Target: N2H2(l)+2H2O2(l)——> N2(g)+4H2O(l)arrow_forward
- Which statement about the reaction below is correct? 2A(g) + 5B(g) → 8C(g) + 6D(g) Group of answer choices A is consumed at a slower rate than B is consumed. C is produced at a slower rate than A is consumed. C is produced at a slower rate than D is produced. D is produced at a faster rate than A is consumed.arrow_forwardConsider the energy diagramarrow_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. A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant. As a reaction progresses its rate goes down. The rate of a slow step has more effect on the overall reaction rate than the rate of a fast step. Reaction rates are determined by reactant concentrations, temperatures, and reactant stabilities. Reaction rates increase with increasing temperature. Reactions involving very unstable combinations of chemicals have large rate constants.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning