The effect that arises if larger fractions are collected in column chromatography experiments should be determined. Concept introduction: A separation technique used for the segregation of components of chemical mixture based on the difference between the adsorption of different components in stationary and mobile phase is called column chromatography. It is used for purification or segregation of compounds. It consists of two phases namely: Stationary phase (solid) Mobile phase (generally liquid) Silica gel is commonly used as the stationary phase.

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Part VII. Below are the 'HNMR, 13 C-NMR, COSY 2D- NMR, and HSQC 2D-NMR (similar with HETCOR but axes are reversed) spectra of an organic compound with molecular formula C6H1003 - Assign chemical shift values to the H and c atoms of the compound. Find the structure. Show complete solutions. Predicted 1H NMR Spectrum 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 f1 (ppm) Predicted 13C NMR Spectrum 100 f1 (ppm) 30 220 210 200 190 180 170 160 150 140 130 120 110 90 80 70 -26 60 50 40 46 30 20 115 10 1.0 0.9 0.8 0 -10

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Question

Chapter 9, Problem 2Q

Interpretation Introduction

Interpretation:

The effect that arises if larger fractions are collected in column chromatography experiments should be determined.

Concept introduction:

A separation technique used for the segregation of components of chemical mixture based on the difference between the adsorption of different components in stationary and mobile phase is called column chromatography.

It is used for purification or segregation of compounds. It consists of two phases namely:

Stationary phase (solid)

Mobile phase (generally liquid)

Silica gel is commonly used as the stationary phase.

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