A2/ A-level Chemistry: Combined techniques

• In A2/A-Level Chemistry, M+ ion m/z is equal to molecular mass (combine with give empirical formula to deduce molecular formula)
• Identify key fragment peaks to deduce part of the structure of the molecule

In A2/A-Level Chemistry,

• Use characteristic adsorptions to identify functional groups in the molecule

• In A2/A-Level Chemistry, Number of peaks --> number of different carbon environments
• Chemical shift --> type of carbon environment

• In A2/A-Level Chemistry, Number of peaks --> number of different hydrogen environments
• Chemical shift --> type of hydrogen environment
• Splitting pattern --> n+1 hydrogens on the adjacent carbon
• Relative peak area --> number of hydrogens in each environment
• D₂O--> Peaks that disappear are either –OH or –NH (because the deuterium exchanges with the present hydrogen atom

That's the end~

CLICK HERE TO LEARN MORE ABOUT OUR A2/A-LEVEL CHEMISTRY COURSES