For each rate equation, what effect does the indicated concentration change have on the overall rate of the reaction? [1] rate = K[CH3CH₂Br][¯OH] a. tripling the concentration of CH3CH₂Br only b. tripling the concentration of "OH only c. tripling the concentration of both CH3CH₂Br and OH [2] rate = K[(CH3)3COH] a. doubling the concentration of (CH3)3COH b. increasing the concentration of (CH3)3COH by a factor of 10
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- A hypothetical reaction is shown with the reaction coordinate diagram. How many steps are in the reaction mechanism? VI Reaction Progress O6Consider the attached energy diagram. a.) How many steps are involved in this reaction?b.) Label ΔHo and Ea for each step, and label ΔHo overall.c.) Label each transition state.d.) Which point on the graph corresponds to a reactive intermediate?e.) Which step is rate-determining?d.) Is the overall reaction endothermic or exothermic?Energy 7. Consider the following energy diagram: (CH3)3C-OH (CH3)3C-ÕH₂ + HI + r a) Write the overall balanced chemical equation. Reaction coordinate (CH3)3C+ + H₂O + F b) How many steps are in the reaction mechanism? c) How many intermediates are in the reaction mechanism? d) Which step requires the most energy? (say step "X", where "X" is a number) e) CIRCLE ONE ANSWER. The overall reaction is an example of: substitution addition elimination (CH3)3C-I rearrangement
- 9.5) How would each of the following change the rate of the reaction shown here? 2SO2 (g) + 02 ---> 2SO3 (g) a. Adding SO2 b. Raising the temperature c. Adding a catalyst d. Removing some SO2Consider the following energy diagram. a.How many steps are involved in this reaction? b. Label ΔHo and Ea for each step, and label ΔHooverall. c.Label each transition state. d.Which point on the graph corresponds to a reactive intermediate? e.Which step is rate-determining? f. Is the overall reaction endothermic or exothermic?Consider the reaction energy diagram shown below. The reaction shown is reversible, it can proceed from reagents-> products or produCts->reagents. In which direction do you think the reaction has a higher rate constant, k? reactants Reaction pregresk O a. both k's are the same. b. reactants-> products has the higher k. C. reactants to products always has the larger k d. products -> reactants has the higher k. Posential cncrgy
- (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 relateConsider the following hypothetical reaction coordinate diagram with stages represented by I, II, and III, and choose the true statement about the steps in the forward and reverse mechanisms. Which is a TRUE statement? a) Step II --> III is faster and less energetically favorable than step II -->I b) Step II --> III is faster and more energetically favorable than step II -->I c) Step II --> III is slower and less energetically favorable than step II -->I --> Ill is slower and more energetically favorable than | || ||| d) Step II step II -->I7. Which of the following statements is correct? A. The AG° of a reaction depends on the mechanism (i.e., the path). B. The AG* of a reaction depends on the mechanism. C. The AG° of reactions may be changed by adding a catalyst. D. The bigger the AG°, the faster the reaction. E. The bigger the AG°, the slower the reaction.
- State for each of the following K values whether it is reactant favored, product favored, or neither? a.) Reaction rate of 5,658 b.) Reaction rate of 1 c.) Reaction rate of 1x10-3 d.) Reaction rate of 2x102 e.) Reaction rate of 0.1В C. D Reaction progress a. How many intermediates are there in the reaction? b. How many transition states are there? с. Which is the fastest step in the reaction? d. What is the reactant in the rate-determining step? e. Is the first step of the reaction exothermic or endothermic? f. Is the overall reaction exothermic or endothermic? Potential energyQ2. Explain the effect of catalyst in rate of the following reaction N2 + 3H2 (Fe)catalyst 2NH3