Organic Chemistry Answers

Identify the common name of 3-carboxy-3-hydroxy-pentandioic acid?

a)glycolic acid

b)salicylic acid

c)citric acid

d)ketobutiric acid

Why are soluble fibers identified as prebiotics?

Write maximum 5-10-line response.

Draw the structure of the two residue segment of DNA (3’) T-A (5’). 

When 78.95 J of heat are added to 8.7 g of an unknown substance, it's temperature rises from 32.10°C to 33.95°C. What is the heat capacity constant of the unknown substance?

Na 2 SO 4 , calculate the weight of mother liquor and crystals obtained

Acid/base extraction

1.Devise a flow chart that outlines the separations performed in experiment acid/base extraction of 2g of benzoic acid,1g of p-nitroaniline and 1g of azobenzene.

2.write down all the chemical reactions that occur in the extraction procedure of benzoic acid,p-nitroaniline and azobenzene.

3.Why is anhydrous sodium sulphate added to the "organic solution"?

4.Why are the "acidic extracts"and the "basic extracts" cooled before neutralization?

5.Why is water used for washing the precipitate on the funnels specified to be "cold"?

R is a liquid which reacts vigorously with concentrated ammonia to form a white solid which is readily dehydrated on warming with phosphorus (v) oxide

Hydrolysis of a compound B formula C7 H6cl2 was carried out by refluxing with excess potassium hydroxide solution.The resulting solution was acidified with dilute nitric acid and excess silver nitrate added to precipitate the chloride ions as silver chloride, 0.718 g of silver chloride was formed from 0.805 g of B.

a:Calculate the number of chlorine ions present in each molecule of B which are liberated by hydrolysis.

b:Suggest an explanation for the results obtained in a

c:Give a possible structure for B

hydrolysis of compund with formula C7H6CL12 was carried out by refluxing with excess potassium hydroxide solution .the resulting solution was acidified with dilute nitrick acid

What Liquid reacts vigorously with aqueous ammonia to form a solid which is readily dehydrated by warming phosphorus (v) oxide