6. A compound is found to have 80% sulfur and 20% oxygen. What is the empirical formula?SO2SO3S2OS2O3
Question
6. A compound is found to have 80% sulfur and 20% oxygen. What is the empirical formula?
- SO2
- SO3
- S2O
- S2O3
Solution
To find the empirical formula, follow these steps:
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Assume you have 100g of the compound. This means you have 80g of sulfur (S) and 20g of oxygen (O).
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Convert the mass of each element to moles. The atomic mass of S is approximately 32g/mol and O is approximately 16g/mol. So, you have 80g/32g/mol = 2.5 mol of S and 20g/16g/mol = 1.25 mol of O.
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Write the ratio of the moles. This is 2.5 : 1.25, which simplifies to 2:1.
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Write the empirical formula using this ratio. The empirical formula is S2O.
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