QUESTION 11Using the data in the table, what is the average rate of the reaction?A +3 B 2 CTime(s)[A][B}[C]0.1000.2000.00300.0500.0500.1005.00 x 10-2 M/s1.67 x 10-3 M/s5.00 x 10-3 M/s3.33 x 10-3M/sQUESTION 12OOO

Rate of reaction :- It is define as the decrease in concentration of reactants per time or increase…

Answered: Using the data in the table, what is…

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.72PAE: If a textbook defined a catalyst as "a substance that increases the rate of a reaction," would that...

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In general, can we predict the effect of doubling the concentration of A on the rate of the overall reaction A+BC? Can we predict the effect if the reaction is known to be an elementary reaction?
Experimental data are listed for the following hypothetical reaction: A+Bproducts (a) Plot these data as in Figure 11.3. (b) Draw a tangent to the curve to find the instantaneous rate at 60 seconds. (c) Find the average rate over the 20 to 80 second interval. (d) Compare the instantaneous rate at 60 seconds with the average rate over the 60-second interval.
Consider the hypothetical reaction A+B+2C2D+3E In a study of this reaction three experiments were run at the same temperature. The rate is defined as [B]/t. Experiment 1: [A]0 = 2.0 M [B]0 = 1.0 103 M [C]0 = 1.0 M [B] (mol/L) Time(s) 2.7 104 1.0 105 1.6 104 2.0 105 1.1 104 3.0 105 8.5 105 4.0 105 6.9 105 5.0 105 5.8 105 6.0 105 Experiment 2: [A]0 = 1.0 102M [B]0 = 3.0 M [C]0 = 1.0 M [A] (mol/L) Time(s) 8.9 103 1.0 7.1 103 3.0 5.5 103 5.0 3.8 103 8.0 2.9 103 10.0 2.0 103 13.0 Experiment 3: [A]0 = 10.0 M [B]0 = 5.0 M [C]0 = 5.0 101M [C] (mol/L) Time(s) 0.43 1.0 102 0.36 2.0 102 0.29 3.0 102 0.22 4.0 102 0.15 5.0 102 0.08 6.0 102 Write the rate law for this reaction, and calculate the value of the rate constant.
Experimental data are listed for the hypothetical reaction A+BZ (a) Plot these data as in Figure 11.3. (b) Draw a tangent to the curve to find the instantaneous rate at 40 s. (c) Find the average rate over the 10 to 50 s interval. (d) Compare the instantaneous rate at 40 s with the average rate over the 40-s interval.
If a textbook defined a catalyst as "a substance that increases the rate of a reaction," would that definition be adequate?
How will each of the following affect the rate of the reaction: CO(g)+NO2CO2(g)+NO(g) } if the rate law for the reaction] is rate =k[NO2][CO]? (a) Increasing the pressure of NO2 from 0.1 atm to 0.3 atm (b) Increasing the concentration of CO from 0.02 M to 0.06 M.
7-10 The rate of disappearance of HCI was measured for the following reaction: The initial concentration of HCI is 1.85 M. Its concentration decreases to 1.58 M in 54.0 min. What is the rate of reaction?
The reaction H2SeO3(aq) + 6I-(aq) + 4H+(aq) Se(s) + 2I-3(aq) + 3H2O(l) was studied at 0C, and the following data were obtained: [H2SeO3]0 (mol/L) [H+]0 (mol/L) [I]0(mol/L) Initial Rate (mol/L s) 1.0 104 2.0 102 2.0 102 1.66 107 2.0 104 2.0 102 2.0 10-2 3.33 107 3.0 104 2.0 102 2.0 102 4.99 107 1.0 104 4.0 102 2.0 102 6.66 107 1.0 104 1.0 102 2.0 102 0.42 107 1.0 104 2.0 102 4.0 102 13.2 107 1.0 104 1.0 102 4.0 102 3.36 107 These relationships hold only if there is a very small amount of I3 present. What is the rate law and the value of the rate constant? (Assumethatrate=[H2SeO3]t)
Why awe elementary reactions involving three or more reactants very uncommon?
Consider the following statements: In general, the rate of a chemical reaction increases a bit at first because it takes a while for the reaction to get warmed up. After that, however, the rate of the reaction decreases because its rate is dependent on the concentrations of the reactants, and these are decreasing. Indicate everything that is correct in these statements, and indicate everything that is incorrect. Correct the incorrect statements and explain.
Experiments were conducted to study the rate of the reaction represented by this equation.[2] 2NO(g)+2H2(g)N2(g)+2H2O(g) Initial concentrations and rates of reaction are given here. Experiment Initial Concentration [NO] (mol/L) Initial Concentration, [H2] (mol/L) Initial Rate of Formation of N2 (mol/L min) 1 0.0060 0.0010 1.8104 2 0.0060 0.0020 3.6104 3 0.0010 0.0060 0.30104 4 0.0020 0.0060 1.2104 Consider the following questions: (a) Determine the order for each of the reactants, NO and H2, from the data given and show your reasoning. (b) Write the overall rate law for the reaction. (c) Calculate the value of the rate constant, k, for the reaction. Include units. (d) For experiment 2, calculate the concentration of NO remaining when exactly one-half of the original amount of H2 had been consumed. (e) The following sequence of elementary steps is a proposed mechanism for the reaction. Step 1: NO+NON2O2 Step 2: N2O2+H2H2O+N2O Step 3: N2O+H2N2+H2O Based on the data presented, which of these is the rate determining step? Show that the mechanism is consistent with the observed rate law for the reaction and the overall stoichiometry of the reaction.
The reaction 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g) was studied at 904 C, and the data in the table were collected. (a) Determine the order of the reaction for each reactant. (b) Write the rate equation for the reaction. (c) Calculate the rate constant for the reaction. (d) Find the rate of appearance of N2 at the instant when [NO] = 0.350 mol/L and [H] = 0.205 mol/L.

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Using the data in the table, what is the average rate of the reaction? A+3 B 2C Time(s) [A] [B} [C] 0.100 0.200 0.00 30 0.050 0.050 0.100 5.00 x 10-2 M/s 1.67 x 103 M/s 5.00 x 10-3 M/s 3.33 x 10-3 M/s