3.3.6 Organic analysis

Question 1

Test for alkenes test

Answer 1

Shake with br2 water
Pos = orange to colourless

Question 2

Haloalkanes test

Answer 2

Na0h (warm hno3 + agno3)
Presipitate of silver(halgen) that is a specific colour

Question 3

Alcohols test

Answer 3

Accidifide potasium di cromate
Pos is orange to green witha secondary or a primary alchol

Question 4

Aldehyde test

Answer 4

fehlings/tollens
Blu eto red ppt

Question 5

Carboxylic acids test

Answer 5

Add nahco3
Co2 is given off

Question 6

High resolution mass spectrometetry main points

Answer 6

Measureed to more decimal places
Allows you to workout molecular masses of parent ions
Isotopes of atoms do not have exact atomic masses
Can calculate the exact formular of molecules

Question 7

Infrared spectrometry

Answer 7

bond always vibrating. Stronger bonds vibrate at high frequency.
Heavyer atoms means taht a bond vibrates slower
Every bind has a unique natural frequency in the infrared region

Question 8

Infrared spectromrty rmethod

Answer 8

Add simple image
Shine infra red radiation at a sample and the bond adsorbed the energybmeaning it vibrates more
Only absorbeds the radiation that is vibrating at the same frequencyb as its natural frequency
The radiation missing is teh ones taht corrisspond to teh smaple

Question 9

Graph for infrared spectrometery

Answer 9

Peak faces down - bottomest bits
Fingerprint region is unique to each molecule - area bellow 1500
0-h = alcohosl have a braud peak