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define about the paper chromatographypaper chromatography is a very useful technique for separating mixtures of metal ions anions amino acids sugars
define about the column chromatographyin column chromatography a tube is filled with the material constituting the stationary phase plus a solvent
define modes or techniques for chromatographic separationin practice chromatographic separation may take one of these modes or techniques paper
generation of the electrophile the electrophile is the carbocation produced by protonation of the alcohol oxygen and loss of
define ion exchange chromatographyin this method a reversible exchange of ions is effected usually resins and ionic solutes are the two components
ethylbenzene ethylbenzene has a three-proton triplet and at somewhat greater chemical shift in the benzylic proton region a two-proton quartet
explain bromination of n-n-dimethylaniline bromination of nn-dimethylaniline is faster because nitrogen has an unshared electron pair that can
define exclusion chromatography - basic separation techniqueit is a chromatographic process in which separation of the sample components takes place
define partition chromatography - basic separation techniqueit is a technique in which separation is achieved as a consequence of the relative
define adsorption chromatography - basic separation techniqueadsorption is surface interaction and is by number of forces between surface atoms of
define classification of chromatography - basic separation techniquechromatography can be classified depending upon physiochemical principlesfactors
define popularity of chromatography - basic separation techniquechromatography is popular becausea minute quantities can be analysed qualitatively
define chromatography - basic separation techniquechromatography is the most effective technique for the separation purification and identification
define general procedure of titration - nutritional biochemistryin general a titration requires that we add precise amounts of the known titrant
define standardization - nutritional biochemistryone of the substances involved in a titration must be used as a standard for which the amount of
equivalence point and end point - nutritional biochemistrytitrimetric analysis volumetrically measures the amount of reagent often called a
the color of b-carotenethe color of b-carotene is because of its chromophore of extensively conjugated double bonds catalytic hydrogenation would
define the diatomic molecules in two dimensionsyou have been transported to a two-dimensional world by an evil wizard who refuses to let you revisit
define ideal gas in one-dimensional potential an ideal gas of particles each of mass m at temperature is subjected to an external force whose
resonance for the methyl group at room temperaturethe resonance for the methyl group at room temperature is a singlet when the temperature is lowered
explain chemical potential of ideal gasderive the expression for the chemical potential and gibbs free energy of n molecules of an ideal gas at
define polarization of ideal gasevaluate the electric polarization p of an ideal gas consisting of molecules having a constant electric dipole moment
define about the types of indicatorsthe various types of indicators used arei acid-base indicatorsii redox indicatorsiii metal ion indicatorsiv
define about the term indicatorsthe easiest way to determine when the reaction is complete is by using indicators an indicator is a compound that has
define the determination of completion of reaction several methods are used to determine when the reaction is complete some of these includea