13. Which of the following amine is most soluble in water? (i) H₂N. (ii) H₂N. NH2 a. (i) Give detailed Solution with explanation needed. don't give Handwritten answer (iii) b. (ii) CH2CH3 NH2 (iii) CH3-N CH2CH3 They are equally soluble in water.

Place the binders below in descending order of acidity (pi) and justify your choice: CH3CN; (C2H5)2O; PCl3; As(C6H5)3; (C2H5)3N

16. One way of naming amines is to name in alphabetical order the alkyl groups attached to the nitrogen atom, using the prefixes di- and tri- if the groups are the same. An example is isopropylamine, whose formula is shown above. What are names for (a.), (b.), (c.), and (d.)? NMe (a) (b) (c) N. Me (d) Write bond-line formulas for: (e.) propylamine, (f.) trimethylamine, and (g.) ethylisopropylmethylamine

16. One way of naming amines is to name in alphabetical order the alkyl groups attached to the nitrogen atom, using the prefixes di- and tri- if the groups are the same. An example is isopropylamine, whose formula is shown above. What are names for (a.), (b.), (c.), and (d.)? H NMe, (a) (b) (c) Me (d) Write bond-line formulas for: (e.) propylamine, (f.) trimethylamine, and (g.) ethylisopropylmethylamine 17. Which amines in Problem 16 are (a.) primary amines, (b.) secondary amines, and (c) tertiary amines? 18. Amines are like ammonia in being weak bases. They do this by using their unshared electron pair to accept a proton. (a.) Show the reaction that would take place between trimethyl amine and HCI. (b) What hybridization state would you expect for the nitrogen atom in the product of this reaction?

The antimalaria properties of quinine (C20H24N202) saved thousands of lives during construction of the Panama Canal. This substance is a classic example of the medicinal wealth that tropical forests hold. Both N atoms are basic, and the N of the amine group is far more basic (pKb=4.94) than the N within the aromatic ring system (pKb=10.54). A saturated solution of quinine in water is only 4.55x10-3M. What is the pH of this solution? Record your answer with 2 decimals.

Question 3 Which of the following structures belong to the class of tropane alkaloids, tannins, and alkaloids? Briefly explain your answer. (1) (II) (III) (IV)

Rank the Acidity of the following sets of compounds. Give an explanation for the answers.

a net ionic equation to show that morphine, C17H19O3N, behaves as a Bronsted-Lowry base in water.

Consider the compounds belowz show how Hinsberg's Method for Characterizing Primary, Secondary, and Tertiary Amines can differentiate the set. Follow the diagram format below. HN, H;N. Primary, Secondary, Tertiary Amine BSC + Excess 5% NaOH Solution Formation of Layers + 5% HC1 + 5% HCl to residue Precipitate Formation 1° Amine Layer Formation 2° Amine Miscible Solution 3° Amine

The protonated amine group in the structure below has a pka of 9.5. ОН СНз OH CH3 +. N. N-H H30* H2O + + CH3 CH3 Structure A Structure B Which form of the compound predominates at a pH of 2.7? [Select ] Which form of the compound predominates at a pH of 10.9? [ Select ] Which structure has a greater ability to diffuse across a cell membrane? [ Select ]