Find study content
Learning Materials

Discover learning materials by subject, university or textbook.

Explanations

Textbooks

Exams
All Subjects

Anthropology

Archaeology

Architecture

Art and Design

Bengali

Biology

Business Studies

Greek

Chemistry

Chinese

Combined Science

Computer Science

Economics

Engineering

English

English Literature

Environmental Science

French

Geography

German

History

Hospitality and Tourism

Human Geography

Italian

Japanese

Law

Macroeconomics

Marketing

Math

Media Studies

Medicine

Microeconomics

Music

Nursing

Nutrition and Food Science

Physics

Polish

Politics

Psychology

Religious Studies

Sociology

Spanish

Sports Sciences

Translation

All Subjects

Biology

Business Studies

Chemistry

Combined Science

Computer Science

Economics

English

Environmental Science

Geography

History

Math

Physics

Psychology

Sociology

EXAM TYPES

GCSE

IGCSE

AS

A Level

International A Level

University Admissions Tests

GCSE SUBJECTS

GCSE 1

GCSE 2

GCSE 3

GCSE 4

GCSE 5

SOME-TEXT

IGCSE SUBJECTS

IGCSE 1

AS SUBJECTS

AS 1

A Level SUBJECTS

A Level 1

International A Level SUBJECTS

International A Level 1

University Admissions Tests SUBJECTS

University Admissions Tests 1
Features
Features

Discover all of these amazing features with a free account.

Flashcards

Vaia AI

Notes

Study Plans

Study Sets
What’s new?

Flashcards
Study your flashcards with three learning modes.

Study Sets
All of your learning materials stored in one place.

Notes
Create and edit notes or documents.

Study Plans
Organise your studies and prepare for exams.
Resources
Discover

All the hacks around your studies and career - in one place.

Find a job

Find a degree

Student Deals

Magazine

Mobile App
Featured

Magazine
Trusted advice for anyone who wants to ace their studies & career.

Job Board
The largest student job board with the most exciting opportunities.

Vaia Deals
Verified student deals from top brands.

Our App
Discover our mobile app to take your studies anywhere.

Go to App

Learning Materials

Features

Discover

Chapter 16: Q9P (page 391)

Write balanced reactions for the destruction of $S_{2} O_{8}^{2 ‐}, {Ag}^{3 +} and H_{2} O_{2}$ ,by boiling.

Short Answer

Expert verified

The balanced reactions are,

$2 S_{2} O_{8}^{2 ‐} + 2 H_{2} O 4 {SO}_{4}^{2 ‐} + O_{2} + 4 H^{+}$
localid="1654771990233" ${Ag}^{3 +} + H_{2} O {Ag}^{+} + \frac{1}{2} O_{‐ 2} + 2 H^{+}$
$2 H_{2} O_{2} O_{2} + 2 H_{2} O$

Step by step solution

01

Definition of Adjustment of analyte oxidation state.

Before titration, the oxidation state of the analyte may also want to be adjusted.
Pre-adjustment should be quantitative, and extra pre-adjustment reagent should be eliminated to keep away from interfering with the succeeding titration.
Peroxydisulfate, Silver (II) oxide, and sodium bismuthate are amazing oxidants that may be without problems removed following pre- oxidation.

02

Determine the balanced reactions

$S_{2} O_{8}^{2 ‐}$ is destroyed by boiling the solution after the oxidation

$2 S_{2} O_{8}^{2 ‐} + 2 H_{2} O 4 {SO}_{4}^{2 ‐} + O_{2} + 4 H^{+}$

${Ag}^{3 +}$ is destroyed by boiling the solution after the oxidation:

${Ag}^{3 +} + H_{2} O {Ag}^{+} + \frac{1}{2} O_{‐ 2} + 2 H^{+}$

$H_{2} O_{2}$ is destroyed by boiling the solution after the oxidation:

$2 H_{2} O_{2} O_{2} + 2 H_{2} O$

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Some people have an allergic reaction to the food preservative sulfite $(S O_{3}^{2 -})$ , which can be measured by instrumental methods 37 or by a redox titration: To 50.0mL of wine were added 50.0mL of solution containing $(0.8043 {gKIO}_{3} + 6.0 gKI) / 100 mL$ . Acidification with 1.0 mL of $6.0 M H_{2} S O_{4}$ quantitatively converted role="math" localid="1663606948648" $l O_{3}$ into $l_{3}$ . The $l_{3}$ reacted with $S O_{3}^{2 -}$ to generate role="math" localid="1663607055826" $S O_{4}^{2 -}$ , leaving excess $l_{3}$ in solution. The excess $l_{3}$ required of $12.86 m L o f 0.04818 M N a_{2} S_{2} O_{3}$ to reach a starch end point.

(a) Write the reaction that occurs when $H_{2} S O_{4}$ is added to $K I O_{3} +$ KI and explain why 6.0 gKI were added to the stock solution. Is it necessary to measure out 6.0 g accurately? Is it necessary to measure 1.0 mL
of $H_{2} S O_{4}$ accurately?

(b) Write a balanced reaction between $l_{3}$ and sulfite.

(c) Find the concentration of sulfite in the wine. Express your answer in mol/L and in $m g S O_{3}^{2 -}$ per liter.

(d) t test. Another wine was found to contain $277.7 m g S O_{3}^{2 -} / L$ with a standard deviation of $\pm 2.2 m g / L$ for three determinations by the iodimetric method. A spectrophotometric method gaverole="math" localid="1663607422230" $273.2 \pm 2.1 m g / L$ in three determinations. Are these results significantly different at the 95 % confidence level?

When 25.00mLof unknown were passed through a Jones reductor, molybdate ion $(M o O_{4}^{2 -})$ was converted into. The filtrate required 16.43mLof $0.01033 {MKMnO}_{4}$ to reach the purple end point.

role="math" localid="1663608295687" ${MnO}_{4}^{-} + {Mo}^{3 +} \to {Mn}^{2 +} + {MoO}_{2}^{2 +}$

A blank required. Balance the reaction and find the molarity of Molybdate in the unknown.

Explain what we mean by pre-oxidation and pre-reduction. Why is it important to be able to destroy the reagents used for these purposes?

${Li}_{1} + {CoO}_{2}$ is an anode for lithium batteries. Cobalt is present as a mixture of Co (III) and Co (II). Most preparations also contain inert lithium salts and moisture. To find the stoichiometry, Co was measured by atomic absorption and its average oxidation state was measured by a potentiometric tritration.39 For the titration, 25.00mg of solid were dissolved under in 5. mL containing

$0.1000 {MFe}^{2 +}$ in $6 {MH}_{2} {SO}_{4}$ plus $6 {MH}_{3} {PO}_{4}$ to give a clear pink solution:

${Co}^{3 +} + {Fe}^{2 +} \to {Co}^{2 +} + {Fe}^{3 +}$

Unreacted ${Fe}^{2 +}$ required 3.228 mL of $0.01593 {MK}_{2} {Cr}_{2} O_{7}$ for complete titration.

(a) How many mmol of $C o^{3 +}$ are contained in 25.00mg of the material?

(b) Atomic absorption found 56.4 wt% Co in the solid. What is the average oxidation state of Co ?

(c) Find y in the formula $L i_{1} + C o O_{2}$ .

(d) What is the theoretical quotient wt\% Li/wt\% Co in the solid? The observed quotient, after washing away inert lithium salts, was $0.1388 \pm 0.0006 .$ Is the observed quotient consistent with the average cobalt oxidation state?

Consider the titration of 100.0mLof $0.0100 {MCe}^{4 +}$ in $1 {MHClO}_{4}$ by $0.0400 {MCu}^{+}$ to give ${Ce}^{3 +}$ and ${Cu}^{2 +}$ , using Pt and saturated Ag | AgCl electrodes to find the end point.

(a) Write a balanced titration reaction.

(b) Write two different half-reactions for the indicator electrode.

(c) Write two different Nernst equations for the cell voltage.

(d) Calculate Eat the following volumes of ${Cu}^{+} : 1.00, 12.5, 24.5, 25.0, 25.5, 30.0$ and 50.0 mL. Sketch the titration curve.

See all solutions

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

Read Explanation

Kinetics

Read Explanation

Organic Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Chemical Reactions

Read Explanation

Physical Chemistry

Read Explanation

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free