Thin Layer Chromatography Report

Column Chromatography Alumina Chromatography Mixture 9:1 Hexanes:Ether 8:2 Hexanes:Ether 1:1 Hexanes:Acetone Amount Used 3.962 g 0.143 g 9.50 mL 9.50 mL 11.00 mL Additional Observations (Color, etc.) BIU X₂ X² → BI IU X₂ X² → BI IU X₂ X² → BI IU X₂ X² → BIU X₂ X² →

anch of the following components cannot be detected by gas chromatography? 4 Essential oils Alcohols b) Volatile compounds d) Non-volatile compounds 13- is measured as time elapsed from the point of injection to the peak maximum? a)-Column efficiency d)- Delectability c)-Retention time 14- Which of the following can be used to detect the components in gas chromatography a) non-volatile compounds b) volatile compounds c) Salts d) b&c 15-Which of the following methods is often referred to as mechanical separation processes. a)-Gas Chromatography b)-column chromatography c)- Sedimentation 16- For obtaining better resolution in TLC. and then developed with a second solvent at right angles to the first a) Stepwise b) Descending e) Ascending 17- This is defined as transport of electrically charged particles in a direct-current electric field a) ion exchange chromatography b) Electrophoresis c) ultracentrifuge d) exclusion 18-This figure indicates to schematic Diagram of a) Gas chromatography…

please answer a,b,c,d

10:36 1 ull ? Search Expert Q&A Done Sample G.C. : Simple Distillation Fraction 3 1500- 1000- 500- Time (min) AM Simple- F3 Sample GC of products obtained from Simple distillation of solution that is 40% ethyl acetate and 60% propyl acetate. calculate the following for each sample gas chromatograph. a) retention time for each peak (label peaks) b) area of each peak c) %composition

calculate the following for each sample gas chromatograph.  a) retention time for each peak (label peaks) b) area of each peak c) %composition  Sample GC of starting material for distillation of solution that is 40% ethyl acetate and 60% propyl acetate.

How can you use ion exchange Chromatography to de-ionize water?  Please shortly answer at your own words. Answer should be to the point (specific 4-5 lines).

Which statement(s) are correct for gas chromatography? A) the components in a mixture can be identified from their retention time. B) the relative peak areas give the proportions of components in a mixture. C) Calibration curves are used to confirms the concentrations of components in a mixture.

I need help with the product analysis from gas chromatogram. There should only be 2 peaks.

The uses of thin layer chromatography are: 1) To identify unknown compounds 2) Determine purity of products 3) Analyze reaction mixtures 4) To waste time in lab 5) Determine the melting point of the product U 6) Put an astronaut on the moon.

2. A gas chromatogram of a four-(4)-component mixture had the following areas and retention times (RT). Component ABCD (RT) (min) 2.564 5.241 1.904 3.217 Area (mm²) 2341 1278 4302 1987 A. Which compound do you suspect is the most volatile? Why? B. Calculate the percent composition of component D.

use the following chromatogram and table as your data.       What is the %composition of the Vitamin A peak in the sample?     78.43%        77.73%     7.867%       72.74%

True or False: Liquid-solid  phase column chromatography is used to separate large up to multigram amounts of mixtures, based on their differences (however small) in polarity.