Titration Techniques

CCA! Volume 6

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Titration Techniques

Techniques and concepts important in titrations are demonstrated and discussed.

Description

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Quantities that can be determined by titration are listed and the titration process is described.

Preparing an Analyte Solution

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A solution to be analyzed is prepared in an Erlenmeyer flask.

Using an Indicator During a Titration (Part 1)

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19 Seconds

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6 Slide(s)

Addition of titrant causes temporary color changes early in the titration.

Using an Indicator during a Titration (Part 2)

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17 Seconds

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3 Slide(s)

Addition of titrant and the resulting color change near the end-point are demonstrated.

Is This Solution Too Pink?

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The color of the indicator at and near the endpoint is shown.

Using a Magnetic Stirrer

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38 Seconds

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11 Slide(s)

A magnetic stirrer is used to provide continuous, uniform stirring during a titration.

Rough Titration

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39 Seconds

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8 Slide(s)

In a rough titration we quickly go to the endpoint in order to get a rough idea as to how much titrant is needed so that we can significantly speed up the titration process of multiple samples.

Approaching the Endpoint

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58 Seconds

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8 Slide(s)

This summarizes techniques for approaching the endpoint in a titration.

Endpoint Colors

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34 Seconds

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5 Slide(s)

If you think you may see a hint of persistent color, record the volume, and then add one more drop. If this drop intensifies the color, then you were correct about the endpoint volume you recorded.

Titration with a pH Meter

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18 Seconds

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5 Slide(s)

In an acid-base titration, a pH meter can be used to monitor the change in pH with addition of titrant.

Variations in Technique for Handling Stopcocks

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Three techniques for using stopcocks including right and left hand control are demonstrated.

Titration Curves

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Drawing titration curves, titration curves for various types of acid-base titration, and depictions of color change observed during a titration using several different pH indicators are presented.