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Titration Chapter 21 section 1.

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Presentation on theme: "Titration Chapter 21 section 1."— Presentation transcript:

1 Titration Chapter 21 section 1

2 What is the process known as titration?
                                                                                                                                      What is the process known as titration?                                                                                                                                                                                   Titration is a laboratory technique by which we can determine the concentration of an unknown reagent using a standard concentration of another reagent that chemically reacts with the unknown. This standard solution is referred to as the "titrant". We have to have some way to determine when the reaction is complete that we are using. This is referred to as the "end point" or more technically the equivalence point. At that point all the unknown has been reacted with the standard titrant and some kind of chemical indicator must let us know when that point has been arrived at

3 Equivalence point At the equivalence point:
Number of equivalent weights of titrant = Number of equivalent weights of unknown Or [H+] = [OH-]

4

5 Unknown with more than one Equivalent

6 Acid-Base Indicators Acid-base indicators, or pH indicators, are commonly used in chemistry to test the acidity of a water-based solution. Here's a look at what acid-base indicators are, how they are used, and a table of indicators, listing their pH range, color range, and how much to use to test a solution.

7 Indicators


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