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distinguishing among enantiomers requires a technique that has a chiral attributea boiling point does not distinguish among two enantiomersb optical
explain heat of formationalthough both molecules have bridgehead double bonds the double bond in compound b is more twisted and a model of this
explain enantiomerthe two structures differ in configuration at both asymmetric carbonsthey are
explain meso stereoisomera for a molecule to have a meso stereoisomer it must have more than single asymmetric atom and it must be divisible into
give examples of steric effectsthese are both examples of steric effects placing three highly branched groups around a central boron results in van
the abstraction of a hydrogen atomthe h-cn bond is stronger than the o-h bond the abstraction of a hydrogen atom from hcn by the tert-butoxy radical
explain peroxide-promoted addition peroxide-promoted addition is in competition with normal addition and rearrangement the normal processes happen at
explain stereochemistrya the stereochemistry is e the br has higher priority on one carbon stereocenter but it has lower priority on the otherb the
alkyl substituents on the double bond23-dimethyl-2-butene has four alkyl substituents on the double bond this alkene is more stable than
the hydration of propenethe hydration of propene includes the usual mechanistic steps of alkene protonation to form a carbocation followed by the
explain thiols because of the element effect both thiols the compounds with -sh groups are more acidic than ethanol ch3ch2oh the compound clch2ch2sh
why boron is electron-deficient a every atom has an octet thus this is not an electron-deficient compoundb the boron is electron-deficient because it
amphoterism of methanolcompound a is much more basic than compound b charge effect by the element effect c is much more basic than a this follows
consult the inside front cover of the text for a list of common functional groupsa nitrileb
van der waals repulsions because severe van der waals repulsions occur among the tert-butyl groups in compound a at normal bond lengths and angles
explain newman projectionsthe systematic name for pullane is 11-di-tert-butyl-24-diethylcyclopentanehence structures b and c are newman projections
why bromoethane are insolublebecause only two layers form two of the three substances are mutually soluble we know that water and bromoethane are
benzene is a very symmetrical compoundbenzene is a very symmetrical compound the carbon framework is essentially a planar hexagon because of its
curve of potential energy versus angle of internal rotationthe curve of potential energy versus angle of internal rotation is essentially identical
both of the mos have the nodes of the original 2p orbitals which merge into a one node because the nodal plane is common to both orbitalsthe
explain bonding molecular orbitalthe bonding molecular orbital is derived by the constructive side-to-side overlap of peaks with peaks and troughs
explain terminal carbons and central carbonsthe terminal carbons are bound to three groups and are thus trigonal planarthe central carbon is bound to
in how many chlorines does slicon bound the sito four chlorines and is thus tetrahedralthe cl-si-cl bond angle is
what is linear geometrythe beryllium be bears two groups and thus has linear geometry the h-be-h bond angle is
the formal charge on the hydrogens arethe formal charge on all the hydrogens is 0 for the other atomsa nitrogen has a complete octet and a formal