Carboxylic acids: R-COOH, R-CO 2 H, Common names: HCO 2 Hformic acidL. formica ant CH 3 CO 2 Hacetic acidL. acetum vinegar CH 3 CH 2 CO 2 Hpropionic acidG.
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Alkynes. C n H 2n-2 C 2 H 2 H:C:::C:H H—C C—H sp => linear, 180 o acetylene ethyne C 3 H 4 CH 3 C CH methylacetylene propyne.
