Consider the reaction: A → 2C The concentration of reactant A and product B were monitored at the same time interval. Time t, Minutes Molar Concentration A, [A] Molar Concentration C, [C] 0 2.40 0.00 2.00 2.20 0.40 4.00 2.00 0.80 1. Calculate the change in the concentration of A per unit time (M/min) from time (t=0 min) to time (t=2.00 min). Mark the box with an X to identify your choice of the correct answer. (5 pts) + 0.10 M/min + 0.20 M/min - 0.20 M/min - 0.10 M/min

Consider the reaction: A → 2C The concentration of reactant A and product B were monitored at the same time interval. Time t, Minutes Molar Concentration A, [A] Molar Concentration C, [C] 0 2.40 0.00 2.00 2.20 0.40 4.00 2.00 0.80 1. Calculate the change in the concentration of A per unit time (M/min) from time (t=0 min) to time (t=2.00 min). Mark the box with an X to identify your choice of the correct answer. (5 pts) + 0.10 M/min + 0.20 M/min - 0.20 M/min - 0.10 M/min

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 following data were collected for the reaction: 2A > 4B + C Time Concentration of A Concentration of B (minutes) (moles/L) (moles/L) 1.000 0.000 10 0.800 0.400 20 0.667 0.677 30 0.571 0.858 40 0.500 1.000 50 0.444 1.112 1. Make a graph of the concentrations of A and B versus time. Estimate the rate of disappearance of A and the rate of formation of B at t= 25 min and at t= 40 min. Compare the rates of disappearance of A and formation of B. What would you expect the rate of formation of C to be at t= 25 min and t=40 min? 2. Determine graphically whether the reaction in #1 above is a first order or a second order reaction. Calculate the rate constant for the reaction.
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

8 OKONETICS AND EQUILIBRIUM Deducing a rate law from the change in concentration over time A chemistry graduate student is studying the rate of this reaction: 2N₂O, (g) → 2N₂O, (g) + O₂(g) He fills a reaction vessel with N₂O, and measures its concentration as the reaction proceeds: time (minutes) 0 10. [N₂O,] Explanation 0.300M 0.121 M 20. 0.0762 M 30. 0.0555 M 40. 0.0436M 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. Check rate & D www-awa.aleks.com k= D.D X
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)
Consider the following balanced chemical equation: H₂O2 (aq) + 31 (aq) + 2 H* (aq) → 13¯ (aq) + 2 H₂O (1) In the first 49.9 seconds of the reaction, the concentration of 13 increased from 0.692 M to 0.93 M. What is the average reaction rate over this time interval (in mol L-¹ s-¹)? Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4". Answer:
A chemistry graduate student is studying the rate of this reaction: 2H₂PO4 (aq) → P₂O5 (aq) + 3H₂O (aq) She fills a reaction vessel with H₂PO4 and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 0.20 0.30 0.40 [H₂PO4] 0.500M 0.291 M 0.169 M 0.0981 M 0.0570M 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 = = k x10 X Ś
A chemistry graduate student is studying the rate of this reaction: 2C1₂O5 (g) → 2Cl₂ (g) +50₂ (g) He fills a reaction vessel with C1₂05 and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 [C₁₂05] 0.600M 0.215M 0.20 00. 0.131M 0.30 0.0941 M 0.40 0.0734M 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 = - k 0 ☐x10 X Ś
A chemistry graduate student is studying the rate of this reaction: 2C1,O, (g) 2Cl₂ (g) +50₂ (g) She fills a reaction vessel with C1₂05 and measures its concentration as the reaction proceeds: time (minutes) 0 10. 20. [C1,05] 40. 0.600M 0.172M 0.101 M 30. 0.0710M 0.0548M 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 k = 0 x10 ロ・ロ X Ś
Consider the following chemical reaction A - B+ C A plot of 1/A vs. time (in seconds) is a straight line with a slope of 0.0040 Ms1 (OR per molar per second). Calculate the time required, in seconds, for the concentration of A to decrease to 1.03 M when the initial concentration of A is 2.87 M
A chemistry graduate student is studying the rate of this reaction: 2H1 (g) - H₂ (g) +1₂ (g) She fills a reaction vessel with HI and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 [HI] 1.00 M 0.227M 0.20 0.128M 0.30 0.0894M 0.40 0.0686M 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=& D.D
Consider the experimental data collected for the following chemical reaction: 2H2(g) + 2NO(g) → N2(g) + 2H2O(g) Trial Initial [H2] (mol/L) Initial [NO] (mol/L) Rate of Reaction (mol/L∙s) 1 0.031 0.0025 2.0 x 10-3 2 0.062 0.0025 4.0 x 10-3 3 0.031 0.0050 8.0 x 10-3 4 0.062 0.0050 1.6 x 10-2 Which action will have more effect on the rate of this reaction; changing the concentration of H2(g) or that of NO(g)? Explain your reasoning by considering the orders of reactants and writing the corresponding rate law equation.
A chemistry graduate student is studying the rate of this reaction: 2N₂O5 (g) → 2N₂O4 (g) + O₂(g) She fills a reaction vessel with N₂O5 and measures its concentration as the reaction proceeds: time (seconds) 0 1.0 2.0 3.0 4.0 [N₂O5] 0.500 M 0.311 M 0.193 M 0.120M 0.0744 M 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 0 x10 ロ･ロ X 00 S