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Transcript

Redox titration
(iodometry)

TAIEB Jade

SOUFFLET Ines

START

Index

Explanations

Equipment

Installation

Results

Questions

What is a Redox titration ?

(iodometry)

It is a titration method that occurs in a redox reaction


The standard titration reaction is: I2 + 2 S2O32- → 2 I- + S4O62-

In iodometry the recurring component is iodine.
Sodium thiosulfate is usually used as a titrant.

A redox titration is a titration of a reducing agent by an oxidizing agent or titration of an oxidizing agent by a reducing agent.

Explanations

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beaker

graduated burette

bar magnet

magnetic stirrer

solutions

security

+ info

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The burette is place above que beaker and the beaker above the magnetic stirrer.


We place the bar magnet in the beaker.

The magnetic stirrer is placed under the beaker

Installation

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+ info

Results

This titration process is used to determine the content and quality of a substance before it is processed into drugs.


the redox titration works based on the transfer of electrons from the analyte to the titrant.

The goal of a redox titrationis to easily locate the equivalence point and to determine with sufficient precision the equivalent volume.

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Questions

Eureka!

Why is the bar magnet important ?


Why does the solution change colors ?

What is added to the beaker to give the dark blue color ?