Question

Vapour density of a hydrocarbon is 30 if on complete combustion of hydrocarbon 8.8 gram of seo2 and 5.4 gram of h2o are obtained then molecular formula of hydrocarbon

Answer 1

Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.