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Higher Chemistry > Chromatography > Flashcards

Chromatography Flashcards

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1
Q

What is chromatograhy used for

A

allows chemists to seperate substances in complex mixtures

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2
Q

What is the stationary phase in TLC

A

chromatography paper

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3
Q

What is the mobile phase in TLC

A

solvent

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4
Q

Why does the spot move in TLC

A

polarity
mass

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5
Q

Whatis GAS CHROMATOGRAPHY used for

A

to seperate complex mixtures

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6
Q

If a substance peaks at the beginning, what does that mean?

A

greater affinity for MOBILE phase
small molecular mass

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7
Q

If a substance peaks at the end, what does that mean?

A

greater affinity for STATIONARY phase
big mollecular mass

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8
Q

What is the mobile phase in gas chromatography

A

inert gas

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9
Q

what is the stationary phase in group 8?

A

inert liquid or solid

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Higher Chemistry (15 decks)

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