BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Excess KI is added to a 100.0-mL sample of a soft drink that had been contaminated with bleach, NaClO. The iodine (l2) generated in the solution is then titrated with 0.0425 M Na2S2O3 and requires 25.3 mL to reach the equivalence point. What mass of NaClO was contained in the 100.0-mL sample of adulterated soft drink?

Interpretation Introduction

Interpretation:

The mass of NaClO  in the given sample has to be determined.

Concept introduction:

  • The relation between the number of moles and mass of the substance is ,

     Numberofmole=MassingramMolarmass

     Massingramofthesubstance=Numberofmole×Molarmass

  • The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
  • For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
  • Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
  • Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
  • Concentrationofsubstance=Amountof substancevolumeofthesubstance
  • Amountof substance=Concentrationofsubstance×volumeofthesubstance
  • Titration is a method to determine the concentration of a substance in solution by adding a solution of known volume and concentration until the reaction is completed.
Explanation

The balanced net ionic equation for the reaction occurring in the titration is,

        I2(aq)+2S2O3(aq)22I(aq)+S4O6(aq)2

Amount of Na2S2O3 can be determined as follows,

Amount ofNa2S2O3=CNa2S2O3×VNa2S2O3

                          =0.0425molNa2S2O31L×0.0253L

                          =1.075×1003molNa2S2O3

From the amount of Na2S2O3 number of moles of I2 can be calculated. Stoichiometric ratio between Na2S2O3 and I2 is 2:1

1.075×1003molNa2S2O3×1molI22molNa2S2O3=5

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
Sect-4.8 P-4.11CYUSect-4.8 P-4.12CYUSect-4.8 P-4.13CYUSect-4.9 P-4.14CYUSect-4.9 P-1.1ACPSect-4.9 P-2.1ACPSect-4.9 P-3.1ACPSect-4.9 P-4.1ACPSect-4.9 P-4.2ACPSect-4.9 P-4.3ACPSect-4.9 P-4.4ACPCh-4 P-1PSCh-4 P-2PSCh-4 P-3PSCh-4 P-4PSCh-4 P-5PSCh-4 P-6PSCh-4 P-7PSCh-4 P-8PSCh-4 P-9PSCh-4 P-10PSCh-4 P-11PSCh-4 P-12PSCh-4 P-13PSCh-4 P-14PSCh-4 P-15PSCh-4 P-16PSCh-4 P-17PSCh-4 P-18PSCh-4 P-19PSCh-4 P-20PSCh-4 P-21PSCh-4 P-22PSCh-4 P-23PSCh-4 P-24PSCh-4 P-25PSCh-4 P-26PSCh-4 P-27PSCh-4 P-28PSCh-4 P-29PSCh-4 P-30PSCh-4 P-31PSCh-4 P-32PSCh-4 P-33PSCh-4 P-34PSCh-4 P-35PSCh-4 P-36PSCh-4 P-37PSCh-4 P-38PSCh-4 P-39PSCh-4 P-40PSCh-4 P-41PSCh-4 P-42PSCh-4 P-43PSCh-4 P-44PSCh-4 P-45PSCh-4 P-46PSCh-4 P-47PSCh-4 P-48PSCh-4 P-49PSCh-4 P-50PSCh-4 P-51PSCh-4 P-52PSCh-4 P-53PSCh-4 P-54PSCh-4 P-55PSCh-4 P-56PSCh-4 P-57PSCh-4 P-58PSCh-4 P-59PSCh-4 P-60PSCh-4 P-61PSCh-4 P-62PSCh-4 P-63PSCh-4 P-64PSCh-4 P-65PSCh-4 P-66PSCh-4 P-67PSCh-4 P-68PSCh-4 P-69PSCh-4 P-70PSCh-4 P-71PSCh-4 P-72PSCh-4 P-73PSCh-4 P-74PSCh-4 P-75PSCh-4 P-76PSCh-4 P-77PSCh-4 P-79GQCh-4 P-80GQCh-4 P-81GQCh-4 P-82GQCh-4 P-83GQCh-4 P-84GQCh-4 P-85GQCh-4 P-86GQCh-4 P-87GQCh-4 P-88GQCh-4 P-89GQCh-4 P-90GQCh-4 P-91GQCh-4 P-92GQCh-4 P-93GQCh-4 P-94GQCh-4 P-95GQCh-4 P-96GQCh-4 P-97GQCh-4 P-98GQCh-4 P-99GQCh-4 P-100GQCh-4 P-101GQCh-4 P-102GQCh-4 P-103GQCh-4 P-104GQCh-4 P-105GQCh-4 P-106GQCh-4 P-107GQCh-4 P-108GQCh-4 P-109GQCh-4 P-110GQCh-4 P-111GQCh-4 P-112GQCh-4 P-113GQCh-4 P-115GQCh-4 P-116GQCh-4 P-117GQCh-4 P-118GQCh-4 P-119GQCh-4 P-120GQCh-4 P-121ILCh-4 P-122ILCh-4 P-123ILCh-4 P-125ILCh-4 P-126ILCh-4 P-127ILCh-4 P-128ILCh-4 P-129ILCh-4 P-130ILCh-4 P-135SCQCh-4 P-136SCQCh-4 P-137SCQCh-4 P-139SCQCh-4 P-141SCQCh-4 P-142SCQ

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Define density. Describe some uses of density.

General Chemistry - Standalone book (MindTap Course List)

To be labeled "low fat. a food must contain 3 grams of fat or less per serving. T F

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

Speed is a(n) ___ quantity. (2.2)

An Introduction to Physical Science

What is the nucleolus, and what is its function?

Biology: The Dynamic Science (MindTap Course List)

List the differences between mitosis and meiosis in the following chart:

Human Heredity: Principles and Issues (MindTap Course List)

45. Name each alkyne:

Chemistry In Focus

Assign an IUPAC name to each of the following aldehydes.

General, Organic, and Biological Chemistry