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(a)
Interpretation:
The reason for the streak formation on silica gel TLC plates by carboxylic acids and addition of acetic acid to reduce the streaking should be explained.
Concept Introduction:
Thin Layer Chromatography is a sensitive chromatographic technique which used to analyze small quantities of the samples by solid-liquid adsorption method. Rectangular glass plate is coated with an adsorbent, sample to be analyzed is run on the plate in the developing chamber with the mobile phase to give spots of the analyzed sample.
(b)
Interpretation:
The chemical component which has to use to reduce the streaking on the TLC caused by the amine should be identified.
Concept Introduction:
Thin Layer Chromatography is a sensitive chromatographic technique which used to analyze small quantities of the samples by solid-liquid adsorption method. Rectangular glass plate is coated with a adsorbent, sample to be analyzed is run on the plate in the developing chamber with the mobile phase to give spots of the analyzed sample.
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Chapter 6 Solutions
Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
- (ME EX1) Prblm #4-11 Can you please help me and explain these I'm very confused in detail please. Prblm number 9 I don't understand at all (its soo confusing to me and redraw it so I can better depict it).arrow_forwardME EX1) Prblm #19-20 I'm so confused with these problems. Can you please help me solve them and explain them? Problems number 19-20, and thanks! step by step and in detail for me please helparrow_forwardCalculate the flux of oxygen between the ocean and the atmosphere, given that: Temp = 18°C Salinity = 35 ppt Density = 1025 kg/m3 Oxygen concentration measured in bulk water = 263.84 mmol/m3 Wind speed = 7.4 m/s Oxygen is observed to be about 10% initially supersaturatedarrow_forward
- ( ME EX1) Prblm 27-28: Can you explain to me both prblms in detail and for prblm 28 what do you mean bi conjugated bi ponds and those structures I'm confused...arrow_forwardA. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation). B. Specify whether the species is "a"-aromatic, "aa"-anti-aromatic, or "na"-non-aromatic (neither aromatic nor anti-aromatic). (Presume rings to be planar unless structure obviously prevents planarity. If there is more than one conjugated ring, count electrons in the largest.) 1. A.Electrons in a cyclic conjugated system. 18 B.The compound is (a, aa, or na) a 2. A.Electrons in a cyclic conjugated system. 10 B.The compound is (a, aa, or na) naarrow_forwardWater is boiling at 1 atm pressure in a stainless steel pan on an electric range. It is observed that 2 kg of liquid water evaporates in 30 min. Find the rate of heat transfer to the water (kW).arrow_forward
- Could you please turn this into a complete Lewis dot structure formula for me so I can visualize it more clearly? and then do the explaining for the resonance structures that were given please.arrow_forwardCould you please turn this into a complete Lewis dot structure formula for me so I can visualize it more clearly? and then do the explaining for the question.arrow_forwardplease solve. If the answer is "no error" and it asks me to type something, and i typed a-helix, its always wrong.arrow_forward
- Can you please solve and explain this for me in a simple way? I cant seem to comprehend this problem.arrow_forwardPart I. Problem solving. Include all necessary calculations 13 provide plots and graphs. Complexation wl diphenyl carbazide (OPC) in acidic media is another type of sensitive photometric method used for the analysis of aqueous. hexavalent chromium. At 540nm the cherry-red complex as a result of DPC reaction w/ chromium can be photometrically measured. at this wavelength. - a 25mL The UV-vis analysis for the determination of nexavalent chromium in ground water sample is given below. The experiment was based on external calibration method w/ each measurement sample prepared are as follows lab sample analysis contained the standard 100 ppb croy cor groundwater sample, volumes used as indicated below), 12.50 mL of 0.02 M H2Soy and 5.50 ml of 100 ppm DPC (wi water to adjust final volume to 25-ml). The main stripping method was square wave voltammetry, following the conditions set in the main ASV experiment. Standard 100 Volumetric Groundwater H2SO4 0.20 M, flask Sample, mL ppb CrO4*, 100…arrow_forwardplease helparrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
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