Why can't an electrophile react with a nucleophile to form an ionic bond after all in some electrophile-nucleophile reactions ions are involved? With reference to covalent and ionic bonds. why does protein not dissolve in water as salt doe...
Why are volatile organic compounds considered hazardous gases? Why are the free fatty acids more easily converted into esters with a acid catalyzed method but not with the base catalyzed method? Why are trans fats bad? Why does oil not dissolve in water?
Thereby, SCW may behave like favorable nonpolar hexane solvent (e = 1.8) or even like polar methanol solvent (e = 32.6) with high solubility for OM [17]. However, SCW is not only able to dissolve hydrocarbons, but it can also react with OM, its destruction products, and with rock ...
e.g. air and lake water 5 Solutions • solute is the dissolved substance seems to “disappear” “takes on the state” of the solvent • solvent is the substance solute dissolves in does not appear to change state • when both solute and solvent have the same state, ...
S-13 Water 1.SolubilityofEthanolinWaterExplainwhyethanol(CH 3 CH 2 OH)ismoresolubleinwaterthanis ethane(CH 3 CH 3 ). AnswerEthanolispolar;ethaneisnot.Theethanol—OHgroupcanhydrogen-bondwithwater. 2.CalculationofpHfromHydrogenIonConcentrationWhatisthepHofasolutionthathasan H concentrationof(a)1.75 ...
Electrolytes in solution Since colligative properties only depend on the number of molecules. Ionic compounds should have a bigger effect. When they dissolve they dissociate. Individual Na and Cl ions fall apart. 1 mole of NaCl makes 2 moles of ions. ...
原水(naturalwater)是九種同位 素化合物(isotopiccompounds)的混合,如表 一[1]所示,因H 2 16 O佔大部分,水一般以 H 2 16 O表示[2]。圖一[1]為純水密度與溫度的 表一 原水的組成[1] H 2 16 O99.76(%) H 2 18 O0.17 H 2 17 O0.037 HD 16 O0.032 HD 18 O0.00006 HD 17 O0.00001 D 2 ...
not be very soluble in water. (c) Benzaldehyde can form hydrogen bonds to water through its O atom. However, most of the molecule is nonpolar and, as a result, it has limited solubility in water. (b) Oxalic acid is polar and can form hydrogen bonds. Of these three compounds, oxa...
HowWaterDissolvesMolecularCompounds H2Ogetsinbetweenthemolecules(separatingthem) Ex.Sugar(alsoapolarmolecule) WhatWillDissolve? LikeDissolvesLike!! -PolarmoleculesdissolvepolarmoleculesEx.H2O&sugar -Nonpolarmoleculesdissolvenonpolarmolecules Oil–Nonpolar
will dissolve in 100g of water at room temperature. 并变成 简单句; 2) 三和四合并为一个简单句。 例2 If a polar substance is mixed with a nonpolar substance, the polar molecules attract one another and exclude the nonpolar molecules , for which they have ...