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In the chromatography of the reaction mixture, since water is absorbed in the cellulose functioned as the stationary phase. What is the principal factor determining the migration of individual components in the sample? a. Hydrogen bonding b. Solute concetration c. Stationary phase concetration d. Thickness of the paper Hydrogen bonding because the relative amount of hydrogen bonding to the stationary phase will determine the relative rate of migration of the various components in the sample. If aspartic acid was formed by the pre-biological synthesis what can be assumed? a. Aspartic acid is unstable at temperature below 150 C b. All of the malic acid underwent the dehydration reaction to form fumaric acid c. Compund A and cyanide were available on primitive Earth d. the reaction between ammonia and fumaric acid was catalyzed by the presence of water. Compound A and cyanide were available on primitive Earth because in order for the experimental reaction sequence to be relevant to the primordial formation if aspartic acid, the starting material used had to be available during that time. What is the functional group formed during peptide bond formation? An amide group There is more steric hindrance at the 2-position of 2-pentanol than at 1-position of pentanol because the rate of substitution of protonated alcohols is subject to steric hindrance. this inhibits the ability of nucleophiles to collide with the reacting electrophilic center and slows the rate of reaction. if a solution with 2-methyl-2butanol, is injected into a gas-liquid chromatograph, the first peak observed in the gc trace is attributable to which compound? 2-methyl-2butane will exhibit the lowest molecular weight and also the weakest intermolecular forces of the attraction, this substance will therefore migrate the fastest and be the first peak in the gas chromatograph( gc) trace. how enzymes affect chemical reactions? Stabilization of: the transition state changes the activa
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