Which of the following distinct chemical compounds possess the exact same empirical formula ()? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

The empirical formula is the simplest integer ratio of atoms. (A) Acetic acid: $C_2H_4O_2 \rightarrow$ ratio 2:4:2 $\rightarrow$ reduces to $CH_2O$. (B) Glucose: $C_6H_{12}O_6 \rightarrow$ ratio 6:12:6 $\rightarrow$ reduces to $CH_2O$. (C) Formaldehyde: $HCHO \rightarrow CH_2O$. (D) Ethanol: $C_2H_6O \rightarrow$ ratio 2:6:1, which cannot be reduced further, so its empirical formula is $C_2H_6O$, not $CH_2O$.