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...

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The rate of a reaction is how quickly the reaction goes to completion. If two reactions have the same amount of reactant, increasing the rate does not increase the amount of product produced, it simply reduces the time that it takes to make the product. Using the internet , research the four factors below that affect the rate of a chemical reaction. 1. Reactant concentration ( explained with details and add graphs to explain what you wrote for each one of them) 2. pressure ( explained with details and add graphs to explain what you wrote for each one of them) 3. Temperature ( explained with details and add graphs to explain what you wrote for each one of them) 4. Presence of a catalyst. ( explained with details and add graphs to explain what you wrote for each one of them) Your work should be written in complete sentences, and assume your audience is grade 11 chemistry students who do not understand this unit. Make sure all research is put into your own words!
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.
Which of these are factors that impact rate of reaction? temperature reactant concentration presence of a catalyst O reactant particle size
O KINETICS AND EQUILIBRIUM Deducing a rate law from initial reaction rate data Some measurements of the initial rate of a certain reaction are given in the table below. [H,] 12 initial rate of reaction 1.95 M 2.44 М 23.0 M/s 0.497 M 2.44M 5.86 M/s 1.95 M 0.618М 5.83 M/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 3 significant digits. Also be sure your answer has the correct unit symbol. rate = k|| k = ?
2 Define "activation energy" a b What is the role of a catalyst in chemical reactions? Draw an energy profile diagram of an exothermic reaction and show the reaction pathway both with and without a catalyst present.
(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.
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.
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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.)
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Consider the following reaction and predict the new rate of the reaction if the concentration of A is doubled and the concentration of B was quadrupled. The new rate will be how many times greater than the original rate?