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Which of the following is a molecular formula for a compound with an empirical formula of CH2O and a molar mass of 150. g/mol.

(i) C9H18O9(ii) CH2O(iii) C6H12O6(iv) C2H4O2

Respuesta :

dsdrajlin

Answer:

C₅H₁₀O₅

Explanation:

Let's consider a compound with the empirical formula CH₂O. In order to determine the molecular formula, we have to calculate "n", so that

n = molar mass of the molecular formula / molar mass of the empirical formula

The molar mass of the molecular formula is 150 g/mol.

The molar mass of the empirical formula is 12 + 2 × 1 + 16 = 30 g/mol

n = (150 g/mol) / (30 g/mol) = 5

Then, we multiply the empirical formula by 5.

CH₂O × 5 = C₅H₁₀O₅

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