Synthesis of Salicylic Chemical p

Experimental Info:

1 . Mass of methyl salicylate employed: 0. 232 g

installment payments on your Theoretical deliver of salicylic acid: 0. 211 g

3. Amount H2SO4В added, with units (drops or mL): 3mL

4. Mass of crude salicylic acid acquired: 0. two hundred fifty g

5. Volume of normal water used because recrystallizing solvent: 2 cubic centimeters

6. Mass of purified salicylic acid solution: 0. 134 g

7. Percent deliver of purified salicylic chemical p from reaction: 63. 5% 8. Burning point of purified product: 158-160 oC

9. Brand of NMR solvent employed and its chemical shifts: Acetone-d6, the substance shifts are 29. 9 and 206. 7 pertaining to 13C

Concerns:

1 .

2 . The phenol group of methyl salicylate is a weak chemical p, therefore it acts very immediately with a strong base, in this case NaOH, to create a sodium salt. Which gets rid of the L from the phenol group. During hydrolysis the ester number of methyl salicylate is busted apart by the addition of any molecule of water. From which a molecule of alcohol and a molecule of carboxylic acid are received. The strong basic reaction mixture causes the carboxylic acid to react very quickly, which causes the organization of the carboxylate anion, in such a case a dianion. From this process it can be declared the product can easily exist like a dianion prior to the addition sulfuric acid..

several. a.

. 250g Г— 100mL = 25g/mL 13. 9mL Г·100mL =. 139. 2502g --. 03197g=. 2182g 25g/mL Г·1. 8 g = 13. 9 milliliters. 139 Г—0. 23 g =. 03197 g (. 2182 Г·. 2502) Г— 100 sama dengan 87. 2% 13. 9mL Г· 75 mL=. 139

. 139Г—1. 8g sama dengan. 2502 g

b.

. 250g Г— 100mL = 25g/mL 6. 8mL Г· 100mL =. 068. 2516g В­. 01564g sama dengan. 2360g 25g/mL Г· three or more. 7g = 6. 8mL. 068 Г—. 23g =. 01564 g(. 2360 Г·. 2516)Г— 90 =93. 8% 6. 8mL Г· 100mL =. 068

. 068 Г— 3. 7g =. 2516g

c.

. 250g Г— 100mL = 25g/mL 6th. 8mL Г· 100mL =. 068. 2516g -. 00884g =. 2427g

25g/mL Г· 3. 7g =6. 8mL. 068 Г—. 13g =...