An unknown compound, believed to be a hydrocarbon, showed the following behavior: it burned with yellow sooty flame; no heat Or color appeared when sulfuric acid was added; permanganate solution remained purple; the red color of bromine solution was lost only after catalyst was added. From the compounds below, circle the one that fits the observations Write equations for the tests that work: CH;CH,CH;CHzCH; H-C=C -CH,CHzCH: 299