1. (a) List the five eluents in order of increasing polarity. ethyl acetate, hexane, methanol, dicholoromethane,...

1. (a) List the five eluents in order of increasing polarity.

ethyl acetate, hexane, methanol, dicholoromethane, and toluene

(b) With regard to your experimental results, briefly describe the effect of eluent polarity on the Rf of each stock solution mixture compound.

(c) In the Pre-Laborator Assigment, you listed biphenyl, benzhydrol, and benzophenone in order of increasing polarity. What conclusion can you draw about the effect of compound polarity on Rf in a chosen eluent? Briefly explain

Experiment Results:

benzhydrol rf= 1.2/3.7=0.32

benzophenone rf=2.1/3.7=0.57

biphenyl rf= 3.4/3.7= 0.92

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

(1-propanol, 2-propanol, methanol, 95% ethanol, acetone, ethyl acetate, hexane, and toluene) what will happen if each...

(1-propanol, 2-propanol, methanol, 95% ethanol, acetone, ethyl acetate, hexane, and toluene) what will happen if each one its mixed separately with spinach extract into a TLC plate

what is the density of hexane-ethyl acetate (8:2 by volume) and what are the hazards of...

what is the density of hexane-ethyl acetate (8:2 by volume) and what are the hazards of this solvent

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

Materials Available to Students in Lab:Solvents: acetone, ethanol, methanol, ethyl acetate, hexanes dichloromethane, and diethyl ether....

Materials Available to Students in Lab:Solvents: acetone, ethanol, methanol, ethyl acetate, hexanes dichloromethane, and diethyl ether. Aqueous Solutions: 1 M NaOH, 1 M HCl, 3 M NaOH, 3 M HCl, 1 M NaHCO3, saturated NaCl. Special Glassware: TLC chambers and plates, separatory funnels Step by step procedures for each scenario: 1.During an oxidation of benzyl alcohol to benzoic acid, a student did not have adequate time during the labperiod to let the reaction mixture stir long enough. Consequently, the benzoic...

Rank the following in order of increasing polarity: CH3CI, CH3F, and CH3Br

Rank the following in order of increasing polarity: CH3CI, CH3F, and CH3Br (Please input answers with the following format: CH3CI) Least polar Most polar

Rank the following in order of increasing polarity: CH2Cl2, CF2Cl2, CH2Br2, CBr4

Discuss the IMF of caffeine used in a TLC experiment with 1:1 Hexanes / Ethyl acetate...

Discuss the IMF of caffeine used in a TLC experiment with 1:1 Hexanes / Ethyl acetate as the solvent system and explain why the polarity of caffeine is high or low in this solvent?

1. draw a mechanism for the conversion of methoxybenzyl alcohol to methoxybenzaldehyde. 2.The ethyl acetate layer...

1. draw a mechanism for the conversion of methoxybenzyl alcohol to methoxybenzaldehyde. 2.The ethyl acetate layer was extracted with 0.2M NaOH to remove traces of methoxybenzoic acid that result from additional oxidation of the aldehyde to the carboxylic acid. Explain how crystals of methoxybenzoic acid could be isolated from the NaOH solution. 3. Explain how TLC could be used to monitor the reduction of methoxybenzaldehyde to methoxybenzyl alcohol using NaBH4 as a reducing agent.

For the system of methanol (1) / methyl acetate (2) at P=101.33kPa, use Raoult’s law to...

For the system of methanol (1) / methyl acetate (2) at P=101.33kPa, use Raoult’s law to find the pure boiling temperature of each component at P=101.33kPa Extra Info (from previous calculations): Bubble Point - If x1 = 0.85, x2 = 0.15, then Tguess = 63.55C and y1 = 0.8123, y2 = 0.1877 Dew Point - If y1 = 0.45, y2 = 0.55, then Tguess = 61C and x1 = 0.4786, x2 = 0.5214 **ANSWER IS SUPPOSED TO BE (T1 *=64.7C...

List the following types of electromagnetic radiation in order of increasing wavelength:

List the following types of electromagnetic radiation in order of increasing wavelength:(a) The gamma rays produced by a radioactive nuclide used in medical imaging;(b) Radiation from an FM radio station at 93.1 MHz on the dial;(c) A radio signal from an AM radio station at 680 kHz on the dial;(d) The yellow light from sodium vapor streetlights;(e) The red light of a light-emitting diode, such as in a calculator display.

Subjects