The molecular formula of glucose is C6H12O6. Its empirical formula is C?H?O?. What number goes after the H?
Question
The molecular formula of glucose is C6H12O6. Its empirical formula is C?H?O?. What number goes after the H?
Solution
The empirical formula of a compound gives the simplest whole-number ratio of atoms in the compound.
The molecular formula of glucose is C6H12O6.
To find the empirical formula, we divide each subscript in the molecular formula by the greatest common factor.
The greatest common factor of 6, 12, and 6 is 6.
So, we divide each subscript by 6:
C6/6 = C1 or simply C H12/6 = H2 O6/6 = O1 or simply O
So, the empirical formula of glucose is CH2O.
Therefore, the number that goes after the H in the empirical formula of glucose is 2.
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