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Adv. Organic Chemistry > Osmometry > Flashcards

Osmometry Flashcards

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1
Q

osmometry

A

absolute technique

determines Mn

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2
Q

disadvantage

A

lacks polydispersity

colligative property: depends on # particles in soln (not size)

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3
Q

how does it work?

A

semipermeable membrane

solvent pass freely (small)

polymer strapped (large)

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4
Q

osmotic pressure (pi)

A

difference in levels

pressure needed to prevent solvent from flowing over

dependent on # molecules

determine Mn

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5
Q

Vant Hoff

A

calculate Mn if given osmotic pressure data and concentration/Temp

y-intercept = RT/Mn

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Adv. Organic Chemistry (27 decks)

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