Alkanols Formula
1. The problem is to find the general molecular formula for alkanols.
2. Alkanols, also known as alcohols, are organic compounds derived from alkanes by replacing one hydrogen atom with a hydroxyl group (-OH).
3. The general formula for alkanes is $C_nH_{2n+2}$, where $n$ is the number of carbon atoms.
4. When one hydrogen atom is replaced by an -OH group, the formula changes because the -OH group adds one oxygen atom and one hydrogen atom but removes one hydrogen atom from the alkane.
5. Therefore, the general molecular formula for alkanols is:
$$C_nH_{2n+2 - 1 + 1}O = C_nH_{2n+1}O$$
6. In simpler terms, the formula is $C_nH_{2n+1}O$, where $n \geq 1$.
7. This formula represents a molecule with $n$ carbon atoms, $2n+1$ hydrogen atoms, and one oxygen atom.
Final answer: The general molecular formula for alkanols is $C_nH_{2n+1}O$.