Organic analysis Flashcards
(7 cards)
1
Q
Write out the equation for the reaction of ethanal with Tollen’s reagent
A
CH3CHO + 2Ag+ + H2O -> CH3COOH + 2Ag + 2H+
2
Q
The active substance in Tollen’s reagent is the …
A
complex ion of [Ag(NH3 )2 ]+
3
Q
Tollen’s reagent is formed by mixing …
A
aqueous ammonia and silver nitrate
4
Q
How do you ID an aldehyde
A
Feelings solution
from a blue solution to a red ppt
5
Q
How do you ID a carboxylic acid
A
Sodium carbonate
CO2 via effervescence
6
Q
How do you ID a chloroalkane
A
Warm with silver nitrate
white ppt of AgCl
7
Q
Describe the technique of infrared spectroscopy
A
- Certain groups in a molecule absorb IR radiation at characteristic frequencies
- Complicated spectra can be obtained that provide information about the bonds present
