The empirical formula of given hydrocarbon is C1H4.
- Finding the mass of C in CO2 and H in H2O is the initial stage in this process. This is accomplished by multiplying by the mass of the compound formed after dividing the atomic mass by the molecular mass.
- Making these masses into moles is the following stage. To do this, multiply the mass by the element's relative atomic mass.
- The last step is to multiply each of these two numbers by the smallest one, in this example, the quantity of moles of carbon.
44g of CO2 → 1mol of carbon
∴0.1467g of carbon dioxide → 0.1467/44 = 0.0033 mol of C
18 g of water → 2mol of Hydrogen
∴ 0.1201 g of water = 2/18 × 0.1201. = 0.013 mol of H
molar ratio of C:H is 0.003 : 0.013
C:H = 1:4
Therefore empirical formula is C1H4
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