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General Chemistry

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Question
5 out of 14
 

The empirical formula of butane is:

A CH3
B C2H5
C C4H10
D CH2
Ans. B The actual formula of butane is C4H10. But the question is not about butane's actual formula. The question asks for the empirical formula of butane. Empirical formula is the most simplified ratio of the actual formula. So the correct answer is C2H5.

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