Pre-Lab Preparation1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affectsrate (for instance, if 2A + B → C, how do the reaction rates for A and B compare?), what arate law is, and the three most common rate orders.2. For the reaction below (the one you will be studying during this lab), write an expression forthe reaction rate in terms of changing concentration over time for each species in the overallreaction (one is given as an example).S20g (aq) + 31 (aq) = 2S0, (aq) +l3 (aq)-A[S,0,)rate =AtimeI-a. What does it mean if a concentration change over time is written as being negative?b. What does it mean if a concentration change over time is written as being positive?3. What does activation energy refer to? There are two equations which may be used tocalculate this, one with an exponent and a linear form of the same equation. Write downboth.4. What does collision frequency refer to?

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1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affects rate (for instance, if 2A + B→ C, how do the reaction rates for A and B compare?), what a rate law is, and the three most common rate orders.

1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affects rate (for instance, if 2A + B→ C, how do the reaction rates for A and B compare?), what a rate law is, and the three most common rate orders.

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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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. [N₂] [H₂] initial rate of reaction 1.59M 1.69 M 8.00 M/s 92.6M/s 1.51 M/s 5.41M 1.69 M 1.59M 0.319M 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 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k 0 x10 ロ・ロ X 0/5
8. The rate of reaction of the hydrogenation of ethene with hydrogen bromide gas is being studied by an industrial chemist. What is the balanced chemical equation including states for this reaction? (This part should help you to better answer the rest of this question!) a. b. Suggest a method for measuring the rate of this reaction The amount of reactant (either one) is followed using the method you suggested in part b. Amount of Reactant Time On the graph, sketch the predicted results for one of the products of this reaction. Explain your sketch. d. On the graph, sketch the predicted results for the reactant if the volume of the reaction container is doubled. Explain. (You may assume this reaction is a non-zero order с. reaction.
8. Smelling salt decomposes spontaneously at room temperature by the equation below. A student places a 10.00-g sample into a 1-liter sealed rigid vessel. What measurements should the student make to determine the rate of this reaction?(NH4)2CO3(s)→2NH3(g)+H2O(g)+CO2(g) a. change in mass and temperature b. temperature and time c. change in mass and time d. change in pressure and time
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The rate of a certain reaction is given by the following rate law: rate = k [H,]°[NH;] Use this information to answer the questions below. What is the reaction order in H2? What is the reaction order in NH3? What is overall reaction order? At a certain concentration of H2 and NH3, the initial rate of reaction is 8.0 x 10* M / s. What would the initial rate of the reaction be if the concentration of H2 were doubled? Round M your answer to 2 significant digits. The rate of the reaction is measured to be 0.610 M / s when [H2] = 1.8 M and [NH3] = 1.8 M. Calculate the value of the -2 -1 k = * = 0M rate constant. Round your answer to 2 significant digits.
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Imagine you wanted to compute the initial rate of a reaction, where the reactants combined changed color or fluoresced, however the reaction was far too fast to detect via the human eye alone. How would you go about determining the reaction rate if you only had a limited volume of the reactants at your disposal? Suggest a suitable method for the following experiment.
Study the reactions. I. N2 (g) + O2(g) → 2NO(g) II. CO(g) + 02(g) → 2CO2 (g) III. Na(s) + HCI(1) → 2NACI(aq) + H2(g) What factor would only affect the rate of the third reaction? the pressure of the reactants the temperature of the reactants the concentration of the reactants the surface area of the reactants
Some measurements of the initial rate of a certain reaction are given in the table below. [N] 0.815M1.56M N,|H||initial rate of reaction 185. M/s 141.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. 口 rate = 0 ロ || = 1 Explanation Check D2022 McGrny Hl LLC. Al Rights Reserved. Terms of N 回至五
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 = ?
Consider the reaction: H2 (g) +I2 (g) → 2 HI (g) A chemist performed an experiment and monitored the concentration of I2 during the course of the reaction. The red line in the graph below represents the results obtained. Which line in the plot would best represent how the concentration of HI changes during the course of the reaction? Time (s) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a b b d d е е Concentration (M)
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