Organic Chemistry Answers

Methanol, CH3OH, is a good solvent for polar substances because: (1) Methanol undergoes dipole-dipole interactions. (2) Methanol is able to form hydrogen bonds with the polar substances. (3) There are weak ion-dipole interactions in methanol. (4) The van der Waals forces in methanol cause repulsion. 

Which of the following reactions is INCORRECT as indicated by the mechanism of the reaction and the major product formed in the reaction? (1) Via the SN1 reaction mechanism:  (2) Via the SN2 reaction mechanism:  (3) Via the SN2 reaction mechanism: CH3CH2CH2CH2CH2OH  +  HCl → CH3CH2CH2CH2CH2Cl +  H2O  (4) Via the SN2 reaction mechanism: CH3CH2OH+HBrCH3CH2Br+H2O 

onsider the compounds, dimethyl ether and ethanol. Which of the following statements is INCORRECT? (1) Molecules of dimethyl ether form strong hydrogen bonds with each other (2) Ethanol has the higher boiling point (3) Dimethyl ether has the lower boiling point (4) Molecules of ethanol form strong hydrogen bonds with each other. 

Consider the compounds, propan-1-ol (CH3CH2CH2OH) and propan-1-amine  (CH3CH2CH2NH2). Which of the following statements is INCORRECT?    (1) Propan-1-ol has a higher boiling point than propan-1-amine (2) The O-H bond is more polar than the N-H because oxygen is more electronegative than nitrogen. (3) Alcohols form stronger hydrogen bonds than amines and have higher boiling points.  (4) Propan-1-amine has a higher boiling point than propan-1

Using relevant examples, briefly discuss the importance of the interaction between Thiol’s compound and metals in Biology/Medicine (500 words)

Explain (in 500 words) the significance of optical property of drug molecules on their bioactivity with special reference to Thalidomide and Vitamin C.

Name the following

H3C CH CH CH3

H2C CH CH2 CH2 CH3

H2C CH CH CH CH3

H2C CH CH CBr CH3

Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. What is the mass percent of antimony in the sulfide? If you have 1.00 kg of an ore that contains 10.6% antimony, what mass of Sb2S3 (in grams) is in the ore?

Base catalysed aldol condensation of benzaldehyde (2 equiv.) and acetone (1

equiv.) may give rise to many possible isomers. The number of possible isomers:

Why is the funnel heated before it is used in the recrystallization of acetanilide