Organic Chemistry Answers

Give reason for the following:

(i) Ethanoic acid is more acidic than ethanol.

(ii) Aniline is less basic than ammonia.

Compounds A and B was discovered by a group of scientists. Compound A is a dipeptide, optically inactive. While compound B is a tripeptide and optically active. Compound A is formed when compound C and compound D joined together by condensation reaction. Whereas monomers E and F are formed by modifying the compounds C and D. Polymer G is formed by the condensation reaction of monomers E and F.

Draw the possible structural formulae of compounds A, B, C, D, E, F and polymer G.

Label the peptide bond(s) for compounds A and B.

With the aid of diagram, discuss why compounds A and B are classified as an optically inactive compound and optically active compound, respectively?

Draw the possible structural formulae for repeating unit of polymer G.

How would you distinguish between polymer G and their repeating unit?

If sulfuric acid, acetic acid, and nitric acid reacts with iron, are they a single displacement reaction? If not what kind reaction are they and please be specific.

what mass in grams are in 5.32*10^22 molecules of co2

1. Which solution has the lowest pH?

A. 0.10 M HClO4

B. 0.10 M HClO

C. 0.10 M KOH

D. 0.10 M CH3NH2

2. Which solution has the highest pH?

A. 0.05 M Sr(OH)2

B. 0.10 M Sr(OH)2

C. 0.10 M NaOH

D. 0.15 M NaOH

3. What is the pH of 0.03 M acid solution? The Ka of the acid is 510-3?

A. 1.5

B. 1.9

C. 2.0

D. 2.3 

4. What is the pH of 0.10 M Ba(OH)2 solution?

A. 0.70

B. 1.00

C. 13.00

D. 13.30 

5. What is the [OH- ] of a solution with pH = 4.33?

A. 2.1104 M

B. 2.110-10 M

C. 4.7109 M

D. 4.710-5 M

6. A 0.025 M solution of compound X has pH = 2.15. Which of the following statements is true?

A. Compound X is a strong acid.

B. Compound X is a strong base.

C. Compound X is a weak acid.

D. Compound X is a weak base.

7. A base has % ionization of 0.3%. What is the pH of 0.05 M solution of the base?

A. 1.3

B. 3.8

C. 10.2

D. 12.7

8. What is the K_a of the acid if the pH of its 0.075 M solution is 2.12?

A. 1.0 x 10^-1

B. 1.1 x 10^-1

C. 7.8 x 10^-4

D. 8.5 x 10^-4

Draw the resonance structure of cyanate ion

Fr+CuSO4

24/+3Cl₂ → 2AlCl3 In an experiment, 54 grams of aluminium reacted with excess chlorine gas. How many formula units of AICI, are produced?

Write a short note on the effects of alcohol on human body.

how filterability distinguishes the particle size of the three given systems in the experiment