If a student accidentally ran their TLC plate with 30% hexane/ether (instead of the 30% ether/hexane...

If a student accidentally ran their TLC plate with 30% hexane/ether (instead of the 30% ether/hexane as directed), briefly explain who their TLC results would differ.

Expert Solution

queen_honey_blossom answered 1 year ago

If a TLC plate was done in acetone and hexane which would have a higher rf...

If a TLC plate was done in acetone and hexane which would have a higher rf value: 1. Benzenaldehyde or 1,4-Pentadien-3-one, 1,5-diphenyl-? 2.Benzenaldehyde or 2,2’-(phenylmethylene)bis(5,5-dimethylcyclohexane-1,3-dione)? 3. Benzenaldehyde or 3,3,6,6-tetramethyl-9-phenyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione?

Why is it better to use a rotovap instead of a hot plate to evaporate ether?

(3) A student accidentally uses toluene to triturate their crude product instead of methanol. Moments after...

(3) A student accidentally uses toluene to triturate their crude product instead of methanol. Moments after heating, their crude product dissolves completely. Explain why the result was undesirable, drawing comparisons between recrystallization and trituration. Propose a solution to recover the student’s product involving a technique utilized in this lab. Explain the difficulty using the technique proposed in (b) with the solvent that the student has dissolved their product in. d. Propose a solution to the problem above.

A TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was...

A TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber. What would you expect to see after the second development was complete?

Why is UV-light used for the “reading” of the TLC-plate?

A TLC plate showed two spots of Rf 0.25 and 0.26. The plate was dried carefully,...

A TLC plate showed two spots of Rf 0.25 and 0.26. The plate was dried carefully, and returned to the developing chamber. What would you expect to see after the second development was complete?

A store accidentally priced item at $20 instead of $30 and honored the mispricing. where should the store attribute the $10 difference?

ORGANIC CHEMISTRY (TLC lab) if you used a solution of 90% ethyl acetate / 10% hexane...

ORGANIC CHEMISTRY (TLC lab) if you used a solution of 90% ethyl acetate / 10% hexane instead of 10% ethyl acetate / 90% hexane to elute your TLC plates, what would you expect to see? Would the Rf valaues increase of decrease for each compound? Explain in detail. Rf values Naphthalene = 0.44 9-fluorene 0.56 Benzophenone = 0.39 Fluorene = 0.88 4-nitroaniline = 0.28 4- methoxyacetophenone = 0.24

A developed TLC plate was examined under UV light. Was it a necessary step if both...

A developed TLC plate was examined under UV light. Was it a necessary step if both ferrocene and acetylferrocene are visible without a visualization method? Why or why not? I need at least a paragraph response to this question!

if youre doing an analysis with a tlc plate and you use ethyl actete (polar) as...

if youre doing an analysis with a tlc plate and you use ethyl actete (polar) as the solvent please rank the distance that these molecules would move (aka which one would be the highest on the plate). They are the same molecule, the only thing that changes is the functional group. One has an alcohol functional group, one has a ketone, and the other has alkene functional group

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