Hi, I was doing the most recent F322 Chemistry Paper (June 2014)
and came across a mass spec fragmentation question that I can't do.
Compound G is a branched chain organic compound that does NOT have E/Z isomers.
Elemental analysis of Compound G gave the following percentage composition by mass - C-55.8%, H-7% and O-37.2%
Calculate the empirical and molecular formula - I did this and got C2H3O and got C4H6O2 from reading the mass specta which is correct.
However, it's the next part i got stuck on - Write the formula for the particles for Peak X (41) and Peak Y (45) The answer for 41 = C3H5+
and for 45 it's COOH+
But i don't get how this work? can someone explain pls?