Consider the following reaction mechanism: STEP 1 (SLOW): CH3Br CH3 + Br STEP 2 (FAST): CH3 + C CH3Cl How would the rate of this reaction change if the concentrations of the two reactants CH3Br and CI are doubled? The reaction rate would double The reaction rate would quadruple More information is needed to decide The reaction rate would not change

Consider the following reaction mechanism: STEP 1 (SLOW): CH3Br CH3 + Br STEP 2 (FAST): CH3 + C CH3Cl How would the rate of this reaction change if the concentrations of the two reactants CH3Br and CI are doubled? The reaction rate would double The reaction rate would quadruple More information is needed to decide The reaction rate would not change

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Use the information given in the following paragraph and energy diagram to answer questions 5-10. The mechanism for the reaction 2A D is illustrated in the following energy diagram where the X- axis is "reaction progress" and the Y-axis is "enthalpy". A is the reactant and D is the product. The reaction has a rate constant of 5.0x102² Mr¹ sec" when no catalyst is present. The equilibrium constant for the overall reaction at 25°C is K [D] = -=1.1×102. [A]² R D 9. You proposed the following mechanism for the overall reaction 2A D based on the energy diagram Step 1. A B (slow), with forward rate constant, k₂ (fast equilibrium), with forward rate constant, k₁, reverse rate constant k.] and equilibrium constant, K₁. Step 2. B 2C Step 3. A+2C D (fast), with forward rate constant, k3 Your classmate pointed out that your mechanism is incorrect. Why is your mechanism incorrect? a. Your mechanism does not incorporate the use of a catalyst b. Your mechanism is not consistent with the experimental…
2C1₂0, (g) → 2Cl₂ (g) +50₂ (g) He fills a reaction vessel with C1₂O5 and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 0.20 0.30 [C₁₂05] 0.0500M 0.0322M 0.0207 M 0.0133M 0.40 0.00858M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k [C₁₂0₂] k = 0 x10 □・□ X
(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.
2. Consider the reaction: NH4 (aq) + 2NO2 (aq) → N2(g) + 2H2O[g) Rate = k[NH4*][NO2] Which of the following reaction conditions will generally result in a longer reaction time? O Adding a catalyst to the reaction mixture. O Placing the reaction mixture in a hot water bath. O Increasing the concentration of any reactants. O Adding distilled water to the mixture.
Consider the same reaction taking place in three vessels. The vessels all contain the same amount of each reactant, but the vessels have different volume and temperature. Rank the vessels in order from the slowest reaction to the fastest reaction. Vessel A: 2.0 L at 50°C Vessel B: 2.0Lat 30°C Vessel C: 4.0L at 30°C Rate of reaction is OA
Which of these changes would increase the rate of a reaction? Decrease concentration Use solid rather than a gaseous form Add catalyst Decrease temperature
(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.
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 slow step has more effect on the overall reaction rate than the rate of a fast step.3. Reaction rates decrease with increasing temperature.4. As a reaction progresses its rate goes down.5. Solid catalysts increase reaction rates as their surface areas increase.6. The rate of a reaction is independent of temperature.7. Reaction rates can show little change as masses of solid reactants increase.
6. A student performs the reaction below in three experiments studying initial concentrations and initial rates. The data is summarized in the table below. SHOW ALL YOUR WORK. 2 NO(g) + Br₂(g) →2 NOBr(g) [NO] 0.80 1.60 0.80 [Br.] 0.60 0.60 1.20 Rate (mol/L.s) 0.14 0.28 0.56 a. What is the order of this reaction with respect to NO? b. What is the order of this reaction with respect to Br₂? c. What is the overall order of this reaction? d. What is the rate law constant, k, for this reaction? (Be sure to include the value and the units.)
The following represents the effect of time on the concentration during a reaction. The upper line represents a reactant concentration and the lower line the concentration of a product. Which of the following statements is not correct? Concentration B C Time → O Between points A and D the reactant concentration is decreasing. O Between points B and C the product concentration is increasing. At point D the rate of the forward and reverse reactions are the same. O At point C the rate of product breakdown equals that of reactant consumption.
(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. Solid catalysts increase reaction rates as their surface areas increase. Catalysts decrease reaction rates. Reaction rate constants decrease with increasing temperature. The higher the rate of a reaction the longer it takes to reach completion. O Reaction rates always increase as masses of solid reactants increase. Reaction rates decrease with increasing temperature.
On an energy diagram of a reaction, the change in enthalpy (ΔH) of a reaction is the difference in energy between __________. the reactants and the products the reactants and the transition state the products and the transition state none of these, it is equal to the activation energy