What would a TLC plate look like on a TLC analysis of benzophenone and diphenylm

Question

What would a TLC plate look like on a TLC analysis of benzophenone and diphenylmethanol in a 9:1 petroleum ether: ethyl acetate. Please help me draw the plate, calculating the RF value and a simple explanation of the observations on the movements of the dots. Thank you. What would a TLC plate look like on a TLC analysis of benzophenone and diphenylmethanol in a 9:1 petroleum ether: ethyl acetate. Please help me draw the plate, calculating the RF value and a simple explanation of the observations on the movements of the dots. Thank you. Thank you.

Explanation / Answer

benzophenone --> polar

diphenylmethanol --> polar + H-bonding

9:1 --> petroleum ether: ethyl acetate

the mobile phase is mostly "NONPOLAR" so the plate must be "POLAR"

then

expec tthe most polar , diphenylmethanol to remain attached to the stationary phase

whereas the least polar, to the mobile phase due to polarity

NOTE that Rf can't be calculated without the plate

Rf = distance travelled by "dot" / total distance

simple explanation:

polar + polar --> interact good

polar + nonpolar --> will not interact

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