Respuesta :
CH 3 is the empirical formula of a hydrocarbon consists of 80 by mass of carbon
The simplest formula or the empirical formula provides the lowest whole number ratio of atoms existent in a compound. The relative number of atoms of every element in the compound is provided by this formula.
Steps for Determining an Empirical Formula
Let’s begin with what’s given in the problem, i.e., the number of grams of each element.
We’ll assume that the total mass is 100 grams if percentages are given, so that
Each element’s mass = the given percentage
The term hydrocarbon refers to an organic chemical compound that is composed exclusively of hydrogen and carbon atoms. Hydrocarbons are naturally-occurring and form the basis of crude oil, natural gas, coal, and other important energy sources. They are highly combustible and produce carbon dioxide, water, and heat when they are burned. As such, hydrocarbons are highly effective as a source of fuel.
Given that the percentage of carbon = 80% and hydrogen = 20%, thus the mole ratio can be calculated as;
[tex]\frac{80}{12} =\frac{20}{1}[/tex]= 6 . 67 : 20 = 1 : 3
empirical formula = CH 3,
and molecular formula of the given hydrocarbon is C 2 H 6
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