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- Stearidonic acid (C18H28O2) is an unsaturated fatty acid obtained from oils isolated from hemp and blackcurrant (see also Problem 10.11).a.What fatty acid is formed when stearidonic acid is hydrogenated with excess H2 and a Pd catalyst? b.What fatty acids are formed when stearidonic acid is hydrogenated with one equivalent of H2 and a Pd catalyst? c. Draw the structure of a possible product formed when stearidonic acid is hydrogenated with one equivalent of H2 and a Pd catalyst, and one double bond is isomerized to a trans isomer. d.How do the melting points of the following fatty acids compare: stearidonic acid; one of the products formed in part (b); the product drawn in part (c)?Succinic anhydride + NH3 -> ? formula must be C4H10N2O3what is the heat combustion of C2H5OH at 25C?
- A hydrocarbon of unknown structure has the formula C8H10. On catalytic hydrogenation over Lindlar's catalyst, 1 equivalent of H2 is absorbed. On hydrogenation over a palladium catalyst, 3 equivalents of H2 are absorbed. Draw a strucutre that fits the data.When talking about the compound Gal(Beta 1-4) Glc, What carbon involved in glycoside bond? What isomerization? What anomeric still free?Suppose the hydrogens on the OH groups in glucose were replaced with methyl groups, CH3. Would you expect the water solubility of the resulting molecule to be higher than, lower than, or about the same as glucose?
- Which of the following structures is a 20:2 (Δ11,16) fatty acid? a. CH3(CH2)9CH=CH(CH2)3CH=CH(CH2)2COOHb. CH3(CH2)2CH=CH(CH2)3CH=CH(CH2)9COOHc. CH3(CH2)10CH=CH(CH2)3CH=CHCH2COOHd. CH3CH2CH=CH(CH2)3CH=CH(CH2)10COOHThe long-term health effects of eating partially hydrogenated vegetable oils concern some nutritionists because many unnatural fatty acids are produced. Consider the partial hydrogenation of linolenic acid by the addition of one or two equivalentsof hydrogen. Show how this partial hydrogenation can produce at least three different fatty acids we have not seen before.Guaiol is a sesquiterpene alcohol found in cannabis and other plants.The structure of guaiol is drawn except for a missing CH3 group. If theisoprene units are joined in a head-to-tail fashion, draw a possiblestructure for guaiol that contains the additional CH3 group.
- CH3-CH2-OH reacts with H+/140C = ? + H2OAfter graduating from your PhD, you are now working as a post-doctoral researcher in BASF , the world’s largest multinational chemical company. The management of your R&D department decided to look at the potentiality of chloroform-methanol mixture in removing the lipids of various biological systems. Your boss, a senior scientist at your department, thinking about the hydroxyl group on the alcohol and thet hree chlorines on the CHCl3 , suggested that the mixture is probably non-ideal. Being one of her brightest colleagues, she then tasked you to graph the partial molar enthalpies of the chloroform methanol mixture as a function of mole fraction. Ardently, you accepted the challenge and went back to your office. After several hours of searching, you finally come up with enthalpy of mixing data at 50oC fort his mixture (See the picture). Please provide the graphs that the boss has asked you for. Put both curves on the same graph. Note: provide your excel file for thisD-glucose and L-glucose would be expected to show differences in which of the followingp roperties? (Answer the items as dif erent or not different) a. Solubility in an achiral solvent b. Density c. Melting point d. Solubility in a chiral solvent e. Freezing point f. Reaction with ethanol (achiral compound) g. Reaction with (+)-lactic acid (chiral compound)