BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

The thiosulfate ion (S2O32−) is oxidized by iodine as follows:

2S 2 O 3 2 ( a q ) + I 2 ( a q ) S 4 O 6 2 ( a q ) + 2I ( a q )

In a certain experiment, 7.05 × 10−3 mol/L of S2O32− is consumed in the first 11.0 seconds of the reaction. Calculate the rate of consumption of S2O32−. Calculate the rate of production of iodide ion.

Interpretation Introduction

Interpretation: The amount of thiosulfate ion consumed in a certain time is given. By using these values, the rate of consumption of S2O32 and andthe rate of production of iodine ion in the given reaction is to be calculated.

Concept introduction: The rate of consumption of a reactant in a chemical reaction is defined as the change in concentration of reactant with time, whereasthe rate of production of a product is defined as the change in concentration of product.

Example: Suppose a chemical reaction is as follows:

AB

The rate of consumption of reactant A in above chemical reaction will be calculated as:

RA=(Δ[A]Δt)

The rate of production of product B in above chemical reaction will be calculated as:

RB=(Δ[B]Δt)

To determine: The rate of consumption of  thiosulfate ion.

Explanation

Given

The change in the concentration of S2O32 is 7.05×103mol/L .

The change in time or time interval is 11.0s .

The chemical reaction is as follows:

2S2O32(aq)+I2(aq)S4O62(aq)+2I(aq)

Rate of consumption of thiosulfate ion is calculated by using the formula,

RS2O32=(Δ[S2O32]Δt)

Where,

  • Δ[S2O32] is the change in concentration of thiosulfate ion.
  • Δt is the time interval.
  • RS2O32 is the rate of consumption of thiosulfate ion.

Substitute the values of Δ[S2O32] and Δt in the above equation.

RS2O32=(7.05×103mol/L11.0s)=6.40×10-4mol/L·s_

The negative sign indicates the decrease in concentration of thiosulfate ion.

To determine: The rate of production of  iodine ion.

Given

The change in the concentration of S2O32 is 7.05×103mol/L .

The change in time or time interval is 11

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 12 Solutions

Show all chapter solutions add

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

On average, young men in the United States obtain percent of their calories from beverages. a. 12 b. 22 c. 32 d...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What characteristic do starts in a constellation or asterism share?

Horizons: Exploring the Universe (MindTap Course List)

What kind of bond between atoms is most prevalent among organic compounds?

Chemistry for Today: General, Organic, and Biochemistry

You stand on a platform at a train station and listen to a train approaching the station at a constant velocity...

Physics for Scientists and Engineers, Technology Update (No access codes included)