Which among the following compounds possesses the same empirical formula mass and molecular mass?Select an answerA CH3COOH B C2H5OH C C4H10 D C6H8N2
Question
Which among the following compounds possesses the same empirical formula mass and molecular mass?
Select an answer
- A CH₃COOH
- B C₂H₅OH
- C C₄H₁₀
- D C₆H₈N₂
Solution
The answer is C C4H10.
Here's the step-by-step explanation:
An empirical formula represents the simplest whole number ratio of atoms in a compound, while the molecular formula represents the actual number of atoms of each element in a molecule of the compound.
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For CH3COOH, the empirical formula is CH2O (which has a molar mass of 30 g/mol), and the molecular formula is C2H4O2 (which has a molar mass of 60 g/mol). So, the empirical formula mass and molecular mass are not the same.
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For C2H5OH, the empirical formula is CH3O (which has a molar mass of 31 g/mol), and the molecular formula is C2H6O (which has a molar mass of 46 g/mol). So, the empirical formula mass and molecular mass are not the same.
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For C4H10, the empirical formula is C2H5 (which has a molar mass of 29 g/mol), and the molecular formula is C4H10 (which has a molar mass of 58 g/mol). So, the empirical formula mass and molecular mass are not the same.
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For C6H8N2, the empirical formula is C3H4N (which has a molar mass of 54 g/mol), and the molecular formula is C6H8N2 (which has a molar mass of 108 g/mol). So, the empirical formula mass and molecular mass are not the same.
Therefore, none of the given compounds have the same empirical formula mass and molecular mass.
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