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Exercise PVC is used to make blister packs , which are widely used for packaging pharmaceuticals. It is produced from vinyl chloride. Vinyl chloride is composed of C, H and Cl. Mass percentages of C and H are 38.43% and 4.84% , respectively. Determine the empirical formula of vinyl chloride. moss
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To determine the empirical formula of vinyl chloride, we need to find the ratio of the number of atoms of each element in the compound.Given:- Mass percentage of carbon (C) = 38.43%- Mass percentage of hydrogen (H) = 4.84%- Mass percentage of chlorine (Cl) = 100% - 38.43% - 4.84% = 56.73%Let's assume we have 100 grams of vinyl chloride. This means we have:- 38.43 grams of carbon- 4.84 grams of hydrogen- 56.73 grams of chlorineNext, we convert these masses to moles by dividing by the atomic masses of each element:- Atomic mass of carbon (C) = 12.01 g/mol- Atomic mass of hydrogen (H) = 1.008 g/mol- Atomic mass of chlorine (Cl) = 35.45 g/molMoles of carbon:
Moles of hydrogen:
Moles of chlorine:
Now, we find the simplest whole number ratio by dividing each mole value by the smallest number of moles calculated:- Carbon:
- Hydrogen:
- Chlorine:
Rounding to the nearest whole number, we get:- Carbon: 2- Hydrogen: 3- Chlorine: 1Therefore, the empirical formula of vinyl chloride is
.