Practice question
Question
A compound has an empirical formula C₄H₉ and a molar mass of 114 g/mol. What is its molecular formula? (Atomic masses: C = 12, H = 1)
Explanation
Given:
A compound has an empirical formula C₄H₉ and a molar mass of 114 g/mol. What is its molecular formula? (Atomic masses: C = 12, H = 1)
Formula:
Empirical mass = (4 × 12) + (9 × 1) = 48 + 9 = 57 g/mol.
Substitution & Calculation:
n = 114 / 57 = 2. Molecular formula = C₈H₁₈.
Final Result:
The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.
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