Organic Analysis

Question 1

What are uses of organic analysis

Answer 1

Detect anabolic steroids
Monitor and track pollutants in air or water
Locate oil deposits
Determine damage to human genes due to environment
Identify country of origin of diamonds

Question 2

Mass spectrometry with cl and br

Answer 2

Ration of chlorine 9:6:1
35Cl-35Cl : 35Cl-37Cl : 37Cl-37Cl
35Cl : 75%
37Cl : 25%
Ratio 1:2:1
79Br-79Br : 79Br-81Br : 81Br-81Br
79Br : 50%
81Br : 50%

Question 3

High resolution mass spectrometry

Answer 3

Distinguish between three very similar compounds
Measures Mr to 4 decimal places
Ar of atoms measured against 1/12 of mass of carbon 12.0000

Question 4

Infrared spectrometry

Answer 4

Atoms joined by covalent bond vibrate
Vibration frequency is unique to atom combination
Wavelength of infrared absorbed is same frequency as natural frequency of bond

Question 5

Fingerprint region

Answer 5

Area below 1500cm3
Caused by complicated vibrations of entire molecules
Unique to each molecule

Question 6

How can infrared spectrometry determine purity

Answer 6

Extra peaks indicates impurity

Question 7

Greenhouse gases

Answer 7

Bonds in them are very efficient at absorbing infrared radiation
Infrared spectra of them have very deep bands indicating high efficiency
Infrared absorbed and causes bonds to vibrate releasing energy in all directions