Paper chromatography Flashcards

1
Q

What is paper chromatography?

A

Paper chromatography is a separation technique that is used to separate mixtures of soluble substances.

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2
Q

What are the two phases in chromatography?

A

Mobile phase and stationary phase?

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3
Q

What does mobile phase mean?

A

Mobile phase is a substance that moves through-the solvent.

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4
Q

What does mobile stationary mean?

A

A substance that does does not move-the paper.

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5
Q

How do you calculate the Rf value?

A

Rf=Distance travelled by spot/Distance travelled by solvent.

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6
Q

What can you use a chromatogram for?

A

You can use it to distinguish (the difference) between a pure substance and a mixture.
Identify substance using Rf value.

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7
Q

Describe the steps in paper chromatography.

A

Look at the revision workbook.

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8
Q

What doe soluble mean?

A

Soluble=can dissolve.

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9
Q

What does insoluble mean?

A

Insoluble=Can’t dissolve.

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10
Q

Why is the line on the paper always drawn with a pencil and not a pen.

A

The ink from the pen will dissolve with the other inks but the pencil won’t dissolve.

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