Organic Chemistry Answers

Give the chemical formula for sodium nitride and calculate its molar mass

b) Give a short explanation for each of the following observations: (i) Alcohols with three or fewer carbon atoms are soluble in water. Those with four carbon atoms are sparingly soluble and those with five of more carbon atoms are insoluble in water. (ii) Propanol (Mw = 60) has a higher boiling point than butane (Mw = 58). (iii) The decreasing order of acidity of alcohol is 1° > 2° > 3° (iv) 2-Chloroethanol is more acidic than ethanol. 

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Chair conformation of (1R, 2S, 4R)- 1-broom-2-ethyl-4-isopropylcyclohexane

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3.(b) (i) Explain why o-nitrophenol has lower boiling points and lower water solubility as compared

with their m- and p- isomers.

(ii) Compare the acidity of ethanol and phenol by using dilute sodium hydroxide aqueous

solution. Explain why such acidity is observed

a) Give the structure of an alkene (or alkenes) with the same number of carbon atoms for the synthesis of the following alcohols:

(i) Butan-2-ol

(ii) 1-Methylcyclohexanol

(iii) tert-butylalcohol

(iv) 1-Methylcyclopentanol

(v) 2-Methylpropan-2-ol 

(b) Write the mechanism for the sulfuric acid catalyzed dehydration of alcohols in 2. (a) (ii) & (iii) and state the rule that determines the products of the reaction. 

Give a short explanation for each of the following observations:

(i) Alcohols with three or fewer carbon atoms are soluble in water. Those with four carbon atoms are sparingly soluble and those with five of more carbon atoms are insoluble in water

. (ii) Propanol (Mw = 60) has a higher boiling point than butane (Mw = 58).

(iii) The decreasing order of acidity of alcohol is 1° > 2° > 3°

(iv) 2-Chloroethanol is more acidic than ethanol. 

During a glucose tolerance test, the serum glucose concentration of a patient was found to be  131 mg/dL. Convert the concentration to grams per liter.