The chemical composition depends on the source. The chemical composition also usually consists of about 10 different hydrocarbons each containing 10 to 16 carbon atoms per molecule. Kerosene is the petroleum distillate and also includes the fractions with boiling points between the 150-degree Celsius and 300-degree celsius. The formula of kerosene is C12H26−C15H32.
What is a Chemical Formula?
A chemical formula is any of the several kinds of expressions of the composition or the structure of chemical compounds. The forms that commonly encountered are either empirical, molecular, structural as well as projection formulas.
An empirical formula always consists of symbols representing the elements in a compound like the Na for Sodium and the Cl for Chlorine and subscripts indicating the relative number of the atoms of each constituent element. A subscript is never used until the number is more than one.
Therefore benzene is represented by the empirical formula CH, which also indicates that the typical sample of the compound contains one atom of carbon to one atom of hydrogen. Carbon is represented as C and hydrogen is represented as H.
Water is therefore represented by the empirical formula H2O, denoting the substance containing two atoms of hydrogen for every oxygen.
What is a General Formula?
A general formula type is the type of empirical formula that represents the composition of any member of the entire class of the compounds. Each and every member of the class of the paraffin hydrocarbons is an example composed of hydrogen as well as carbon. The number of hydrogen atoms always being two or more than twice the number of carbon atoms. That n stands for any number and the general formula of this class is hence CnH2n + 2 .