Oxidation of 15 g of saturated monohydric alcohol yielded 18.5 g of acid. Determine the acid formula.

Answer: CH3CH2COOH (propanoic acid).
Explanation of the solution to the problem: in order to solve this problem, you first need to find the amount of alcohol and acid substance, for this you need to divide the mass by the corresponding molar mass (in general, since we do not know what n is equal to). The amounts of alcohol and acid are equal (the reaction shows that they are in a 1: 1 ratio), so we can equate them and find n from the resulting equation. n = 3 – propanoic acid.