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: Q10P (page 391)

What is a Jones reductor and what is it used for?

Short Answer

Expert verified

Jones reductor is a reducing substance that can be used to lower the oxidation state of a metal ion in an aqueous solution

Step by step solution

01

Definition of Jones reductor.

A device that is used to chemically decrease liquids, such as ferric salt solutions, by pouring the solution into a vertical tube containing granular zinc.

02

Determine the Jones redactor and uses.

Jones reductor is a column that contains zinc coated with zinc amalgam (solution with mercury).
Analyte is pre-reduced by passing through the Jones reductor with sulfuric acid as a solvent Analytes that can be reduced with Jones reductor are ${Fe}^{3 +}, {Sn}^{4 ‐} and {MnO}_{4}^{‐}$ Uses:

A Jones reductor is a reducing substance that can be used to lower the oxidation state of a metal ion in aqueous solution.
A zinc amalgam is the active ingredient. It can be used to make solutions of ions that are promptly oxidised when exposed to air, such as Chromium(II), ${Cr}^{2 ι}$ , and uranium(III), $U^{3 +}$ .

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

${Li}_{1} + {CoO}_{2}$ 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?

The pathogenic bacterium Salmonella enterica uses tetrathionate found in the human gut as an oxidant- just as we use $O_{2}$ to metabolize our food. Write the half-reaction in which tetrathionate serves as an oxidant. Is tetrathionate as powerful an oxidant as $O_{2}$ ?

Aqueous glycerol solution weighing 100.0m gwas treated with 50.0 mL of 0.083 7 M ${Ce}^{4 +}$ in 4 MHCI $O_{4}$ at $60 °$ for15minto oxidize glycerol to formic acid.

${CH}_{2} - CH - {CH}_{2} | | | OH OH OH$ ${HCO}_{2} H$

Glycerol Formic acid

FM92.095

The excess ${Ce}^{4 +}$ required 12.11mL of 0.044 8 MF $e^{2 +}$ to reach a ferroin end point. Find wt%glycerol in the unknown.

A titration of 50.0 mLof unknown ${Fe}^{2 +}$ with 0.100MCeat $25 ° C$ , monitored with Pt and calomel electrodes, gave data in the table. Prepare a Gran plot and decide which data lie on a straight line. Find the x-intercept of this line, which is the equivalence volume. Calculate the molarity of ${Fe}^{2 +}$ in the unknown.

Calcium fluorapatite $({Ca}_{10} ({PO}_{4})_{6} F_{2}, FM 1008.6)$ laser crystals were doped with chromium to improve their efficiency. It was suspected that the chromium could be in the $+ 4$ oxidation state.

To measure the total oxidizing power of chromium in the material, a crystal was dissolved in $2.9 M H C L O_{4}$ at $100 ° C$ , cooled to $20 ° C$ , and titrated with standard $F e^{2 +}$ , using Pt and Ag - AgCl electrodes to find the end point. Chromium above the 3 + state should oxidize an equivalent amount of $F e^{2 +}$ in this step. That is, $C r^{4 +}$ would consume one $F e^{2 +}$ , and $C r^{6 +}$ in $C r_{2} O_{7}^{2 -}$ would consume three $F e^{2 +}$ :

role="math" localid="1664873864085" $C r^{4 +} + F e^{2 +} \to C r^{3 +} + F e^{3 +} \frac{1}{2} C r_{2} O_{7}^{2 -} + 3 F e^{2 +} \to C r^{3 +} + 3 F e^{3 +}$

2. In a second step, the total chromium content was measured by dissolving a crystal in $2.9 M H C L O_{4}$ at and cooling to $20 ° C$ . Excess and were then added to oxidize all chromium to $C r_{2} O_{7}^{2 -}$ . Unreacted $S_{2} {O_{8}}^{- 2}$ was destroyed by boiling, and the remaining solution was titrated with standard $F e^{2 +}$ . In this step, each Crin the original unknown reacts with three $F e^{2 +}$ .

$C r^{x +} + \overset{S_{2} O_{8}^{2 -}}{\to} C r_{2} O_{7}^{2 -} \frac{1}{2} C r_{2} O_{7}^{2 -} + 3 F e^{2 +} \to C r^{3 +} + 3 F e^{3 +}$

In Step 1,0.4375g of laser crystal required 0.498mL of (prepared by dissolving in ). In step , of crystal required of the same solution. Find the average oxidation number of in the crystal and find the total micrograms ofpre gram of crystal.

See all solutions

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

Read Explanation

Physical Chemistry

Read Explanation

Organic Chemistry

Read Explanation

Chemical Analysis

Read Explanation

Nuclear Chemistry

Read Explanation

Chemical Reactions

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