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20 Jun 2020

The following data was collected for the reaction B+ C → D.

Time (seconds) [B] (M) [C] (M)

0 1.180 x10^-4 1.261 x10^-4

10 8.74 x10^-5 6.31 x10^-5

20 6.48 x10^-5 4.20 x10^-5

30 4.80 x10^-5 3.15 x10^-5

40 3.56 x10^-5 2.52 x10^-5

50 2.64 x10^-5 2.10 x10^-5

What is the general rate law?

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General Chemistry 2

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Solve problems relating to reactions of various orders

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1. The following data were collected at 20 ^oC for the reaction of bromphenol blue, HBPB^2-, and hydroxide ions, OH^-, shown in the equation below

HBPB^2- + OH^- <---> BPB^3- + H₂O

a)What is the rate equation for the reaction?

Determination	[HBPB^2-]₀, M	[OH^-]_o, M	Rate, M/sec
1	7.22 x 10^-6	1.00	9.627 x10^-9
2	7.22 x 10^-6	0.25	2.490 x10^-9
3	3.63 x 10^-6	1.00	4.750 x10^-

The reaction was run three times with different initial concentrations of the reactants yielding the following rates:

b)Determine the reaction order with respect to HBPB^2-

c)Determine the reaction order with respect to OH^-

d)Calculate the rate constant for this reaction at 20 ^oC

e)What is the ârate lawâ for this reaction?

f)What other information do you need to calculate the activation energy for this reaction?

2. Why is it better to transfer one group of solutions into one flask and a second group into a second flask and then mix them, instead of pipetting the solutions sequentially into the same flask?

3. What will be the concentration of [I^-] in the reaction flask after mixing (See Run #6): 1.0 ml starch + 2.0 mL 1.2 x10^-2 M Na₂S₂O₃ + 4.0 mL 0.20 M KI + 4.0 mL 0.20 M KNO₃ + 4.0 mL 0.20 M (NH₄)₂S₂O₈ + 4.0 mL 0.20 M (NH₄)₂SO₄ ?

4. What will be the concentration of [S₂O₈^2-] in the same reaction mixture as above?

Please explain 3 & 4

This graph shows the concentration of the reactant Ain the reaction AâB.

Part A

Determine the average rate of the reaction between 20 and 30 seconds.

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The following data was collected for the reaction B+ C → D.

Time (seconds) [B] (M) [C] (M)

0 1.180 x10^-4 1.261 x10^-4

10 8.74 x10^-5 6.31 x10^-5

20 6.48 x10^-5 4.20 x10^-5

30 4.80 x10^-5 3.15 x10^-5

40 3.56 x10^-5 2.52 x10^-5

50 2.64 x10^-5 2.10 x10^-5

What is the general rate law?

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Time (seconds)	[B] (M)	[C] (M)
0	1.180 x10^-4	1.261 x10^-4
10	8.74 x10^-5	6.31 x10^-5
20	6.48 x10^-5	4.20 x10^-5
30	4.80 x10^-5	3.15 x10^-5
40	3.56 x10^-5	2.52 x10^-5
50	2.64 x10^-5	2.10 x10^-5

The following data was collected for the reaction B+ C → D. Time (seconds) [B] (M) [C] (M) 0 1.180 x10-4 1.261 x10-4 10 8.74 x10-5 6.31 x10-5 20 6.48 x10-5 4.20 x10-5 30 4.80 x10-5 3.15 x10-5 40 3.56 x10-5 2.52 x10-5 50 2.64 x10-5 2.10 x10-5 What is the general rate law?

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Weekly leaderboard

The following data was collected for the reaction B+ C → D.

Time (seconds) [B] (M) [C] (M)

0 1.180 x10^-4 1.261 x10^-4

10 8.74 x10^-5 6.31 x10^-5

20 6.48 x10^-5 4.20 x10^-5

30 4.80 x10^-5 3.15 x10^-5

40 3.56 x10^-5 2.52 x10^-5

50 2.64 x10^-5 2.10 x10^-5

What is the general rate law?