(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
OWLv2 with LabSkills for Gilbert/Martin's Experimental Organic Chemistry: A Miniscale & Microscale Approach, 6th Edition, [Instant Access], 4 terms (24 months)
- Use the systematic treatment of equilibrium to determine the pH and the concentrations of all species in a saturated aqueous solution of SrF2. Do not include activity coefficients. The solubility of SrF2 is governed by Ksp for the salt, hydrolysis of F- and of Sr2+, and by ion pairing between Sr2 + and F-. PK(SrF2) = 8.58, PK(HF) = 3.17, pkw = 14.00, pk for the formation of (SrOH+) = 13.18, pk for the formation of (SrF+) = 0.14 Show all your work and upload your answers here. 1 - Write the pertinent reactions. 2 - Write mass balance and charge balance equations. 3 - Write the equilibrium constant expressions. 4 - Count the equations and unknowns. 5- If the problem is solvable make suitable approximations and find the concentrations and the pH.arrow_forwardPlease correct answer and don't use hand ratingarrow_forwardHow might you prepare each of the following using a nucleophilic substitution reaction at some step? (a) (b) (c) (d) CH3 CH3C CCHCH3 CH3 CH3 0 CCH3 ☐ CH3 CH3CH2CH2CH2CN CH3CH2CH2NH2arrow_forward
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- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning