Is benzoic acid or acetic acid more soluble in water? Explain. Why does benzoyl chloride react preferentially with an amine rather than Na2CO3 or water? Why is water not suitable solvent in paper chromatography? Would solid PbCl2 dissolve when water is added to it? Explain. Is pentanoic acid...
Explain why alcohols and alkanoic acids are soluble in water and esters (except for very simple ones) are not. Why does olfaction amplify taste? Why is methanol more toxic than ethanol? Why is diethyl ether a good solvent? Why are nociceptors unmyelinated?
The separation of sodium isethionate from its alkyl isethionate ester on a Vydac 302 IC column with methanol–20 mol L−1 phthalic acid–water (3:5:12) and conductivity detection has been described. Show moreView chapterExplore book
DMAP (m.p. 112-113°C) and PPY (m.p. 57-58°C) are colorless, crystalline substances which are very soluble in methanol, ethyl acetate, chloroform, methylene chloride, 1,2-dichloroethane, acetone, and acetic acid and less soluble in cold hexane, cyclohexane, and water. DMAP can be rec...
Samples were injected in a 1 μl volume on the column and eluted as follows: for RPLC, the gradient went from 99% mobile phase A (0.1% formic acid in H2O) to 95% mobile phase B (0.1% formic acid in methanol) over 16 min. For HILIC, the gradient went from 99% mobile phase...
After rotary evaporation of the mixture, to remove traces of EZ-Link Pentylamine-Biotin azeotrope with toluene (2 × 5 mL) and the residue was dissolved in methanol and added oxalic acid dehydrate. After evaporation, the residue was recrystallized from methanol/ether to give XIE2008-...
acid both contain o-diphenol hydroxyl groups in their molecules. In addition to being easily soluble in ethanol, they are also easily soluble in water, methanol, acetone and other solvents. In addition, the o-diphenol hydroxyl structure is unstable and is easily oxidized and decomposed when ...
bases)-amino] -2- rings-amylene -1- methanol convert compound obtained in the previous step and (v) cyclisation obtains, 4R) or (1R, 4S) -4 ((2- amino -6- chloro -5- formamido -4- pyrimidine bases)-amino) -2- cyclopentene -1- methanol to general formulae I or II final ...
(a) Methanol and hexanol (b) Methanol and acetic acid (c) Methanol and hexane (d) Hexane and Which one of the following is most soluble in water? a. CH_3OH. b. CH_3CH_2CH_2OH. c. CH_3CH_2OH. d. CH_3CH_2CH_2CH_2OH. e. CH_3CH_2CH_2CH_2CH_2OH...
As highly concentrated soluble propeptide is needed for NMR experiments, the hydrophobic fourth α-helix was deleted to produce only the propeptide N-terminal domains (R1p–R60p). The 1D 1H and 2D NOESY spectra of the WT propeptide measured at pH 7 indicated the presence of a folded ...