Chromotography Flashcards

1
Q

if a substance is interacting with the stationary phase what does this mean

A

it is taking longer to reach the solvent front

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2
Q

if a substance is interacting strongly with the mobile phase what does it mean

A

the substance is moving quickly

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3
Q

what is the tlc plate made of

A

aluminium and is coated in silica

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4
Q

if a substance is more polar, what phase is it likely to interact with

A

more polar means it will interact with stationary phase stronger

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5
Q

what phase will a less polar substance interact with

A

the mobile phase, meaning it will rise with the solvent and be higher up the tlc plate

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6
Q

what does it mean if a substance has a high affinity to a stationary phase

A

it is strongly interacting with the tlc plate, taking longer to elute up the plate

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7
Q

what is the equation for rf

A

distance travelled by sibstance / distance travelled by solvent

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