Identification from spectra (20) Answer

IB Chemistry: Identification from spectra (20) Answer

Answer to Identification from spectra: Question 20ElementAmount / molSimplest ratioCarbon85.60/12.01 = 7.131Hydrogen14.40 / 1.01 = 14.262b) The M+ peak at m/z = 70 gives a mass equal to five times that of the empirical mass so the molecular formula is C5H10. The peak with the m/z value of 55 suggests loss of a methyl group to give the C4H7+ fragment. Loss of an ethyl group (M – C2H5)+, i.e. C3H5+ is likely to have...

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