Organic Chemistry Answers

3. Adding HCl to the above amines make them all soluble in water. Write the equations for the addition of HCl to the amines, and describe why the addition of HCl makes them all soluble in water

a. 1-butanamine

b. N-methyl-1-butanamine

c. N,N-dimethylbutanamine

d. Why do these reactions increase their solubility?

2. 1-butanamine and N-methyl-1-butanamine are soluble in water, whereas N,N-dimethylbutanamine is not soluble. Describe why the molecules have different solubilities, indicating on the structural formulas above potential site for H-bonding with water.

B. Solubility of Amines in Water and Acid

1. Draw structural formulas of the following molecules. Include the lone pair of electrons.

a. 1-butanamine

b. N-methyl-1-butanamine

c. N,N-dimethylbutanamine

A. Structure of Primary, Secondary, Tertiary amines.

1. Use your model kit to build the following structures. Sketch the structures and indicate whether they are primary, secondary or tertiary amines.

a. Methanamine

b. N,N-dimethylmethanamine

c. N,N,N-trimethylmethanamine

0.06g of a monobasic acid having the general formula C.HCOOH was neutralised by 100cm of 0.01mol dm NaOH solution. What is the molecular formula of the acid?