C5.1.5 - Titrations Flashcards

1
Q

What is a titration?

A

An experiment to see how much alkali/acid is needed to change pH of the other

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2
Q

Describe how you would perform a titration.

A

You add a bit of alkali to the conical flask. Then, add a few drops of universal indicator to the alkali. Then, slowly add acid to the alkali slowly using a burette. When the alkali is neutralised and the indicator changes colour, stop adding acid.

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3
Q

Describe how you could make a titration experiment more accurate.

A

Use a volumetric pipette instead of a measuring cylinder as it is more accurate
Clamp the burette vertically for more accurate readings

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4
Q

What is a titre?

A

The difference between the initial burette reading and the final burette reading (amount of acid used)

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5
Q

What are concordat titres?

A

Titres that are within 0.1cm^3 of each other

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6
Q

How do you calculate a mean titre?

A

Add the 2 concordant titres and divide by 2

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7
Q

What might you do to obtain a repeatable titre?

A

Swirl the flask during the titration to mix the contents

Do a rough run first to roughly check where the titre will be

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8
Q

What is the meniscus?

A

The curve seen at the top of a liquid in response to its container

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