Organic Solution Testsrename
flickerfly7's version from 2016-09-18 23:42
|1-Alkynes||Tollens' reagent (silver-diamine complex Ag(NH3)2)|
produces a white precipitate
|Unsaturated Hydrocarbons||Reacts with Br in an addition reaction, decolourising the brown solution|
|Alkanols||Dry with CaCl2. Will react with sodium -|
2ROH + 2Na --> 2RONa+ + H2
|Reducing Sugars||Benedict's solution is an alkaline solution containing Cu2+ ions. |
Will create brick-red cloudiness when heated w/.
In Tollens' reagant, will precipitate solid Ag
Reagant composed of silver + ammonia in water
|Starch||Add iodine to create a blue-black complex|
|Cellulose||Treat with acid, then add iodine to create a blue-black complex|
|Carbohydrates||Add aqueous phenol, then HCl.|
The HCl partially dehydrates the molecule.
It then reacts w/ phenol to form a brownish red compound.
|Glycogen||Forms a pale pink solution w/ starch|
|Fats & Oils||Saponification |
Mix w/ NaOH-, gently heat
If solution becomes homogeneous, acidify to produce a precipitate.
|Proteins & Amino Acids||Ninhydrin, turns purple|
|Peptide Bonds (Proteins)||Biuret Test |
Add CuSO4 in a basic (NaOH-) solution
Forms purple complex
|Organic||Can be made to burn/combust, producing CO2 or CO + soot.|