Synthesis of Aspirin

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|Test reagents |With NaOH | |Acetic Acid |None | |Lead Acetate |Cloudy | |Acetic Anhydride |Viscous | |Coconut Oil |More viscous | |Salicylic Acid |Insoluble | |Amide A (yellow) |Viscous | |Amide B (white) |White precipitate | |Amide C (violet) |Cloudy liquid with black droplets settled at the top. |

.Table 4. Reaction with Metallic Hydroxides

Table 4 shows the reaction of the different test reagents mixed with NaOH. Acetic Anhydride, coconut oil and amide A shows viscosity. Lead Acetate and Amide C both shows cloudiness. The difference is that in Amide C, black droplets are observable. Amide B with NaOH reacted to form a white precipitate. Salicylic Acid is insoluble and Acetic Acid shows no reaction.

Carboxylic acids react with strong bases such as sodium hydroxide (NaOH) and potassium hydroxide (KOH) to produce carboxylate salts. Carboxylate salts are ionic compounds, and are typically solids at room temperature because they contain charges, carboxylate...
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