   # Experimental data are listed here for the reaction A → 2 B. (a) Prepare a graph from these data; connect the points with a smooth line; and calculate the rate of change of [B] for each 10-second interval from 0.0 to 40.0 seconds. Does the rate of change decrease from one time interval to the next? Suggest a reason for this result. (b) How is the rate of change of [A] related to the rate of change of [B] in each time interval? Calculate the rate of change of [A] for the time interval from 10.0 to 20.0 seconds. ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 14, Problem 5PS
Textbook Problem
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## Experimental data are listed here for the reaction A → 2 B. (a) Prepare a graph from these data; connect the points with a smooth line; and calculate the rate of change of [B] for each 10-second interval from 0.0 to 40.0 seconds. Does the rate of change decrease from one time interval to the next? Suggest a reason for this result. (b) How is the rate of change of [A] related to the rate of change of [B] in each time interval? Calculate the rate of change of [A] for the time interval from 10.0 to 20.0 seconds.

(a)

Interpretation Introduction

Interpretation:

A graph has to be prepared from the given data and the rate of change of [B] has to be calculated.  A suggestion for the result obtained has to be given for the decrease in the rate of change from one time interval to the next.

### Explanation of Solution

The graph can be prepared as,

Figure 1

The rate of change of [B] is calculated as,

Ratechangeof[B]foreach10-second:_0-10 sec:rate=Δ[B]Δt=0.32-0.010-0=0.0326mol/L10-20sec:rate=Δ[B]Δt=0

(b)

Interpretation Introduction

Interpretation:

The rate of change of [A] at the given time interval has to be calculated.

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