The vapor density of a monobasic carboxylic acid in terms of hydrogen is 30. acid formula.

Let’s implement the solution:
1. According to the condition of the problem, it is given:
R – COOH – carboxylic acid
D (H2) = 30;
M (H2) = 2 g / mol.
Determine the molecular formula.
2. Calculation:
M (RCOOH) = M (H2) * D (H2) = 2 * 30 = 60 g / mol.
3. CnH2n + 1COOH – general formula;
12n + 2 + 1 + 12 + 32 + 1 = 60;
12n = 60 – 48;
12n = 12;
n = 1.
The simplest formula: NSOOH.
4. Molecular formula: CH3COOH;
M (CH3COOH) = 60 g / mol.
Answer: CH3COOH – acetic acid (ethanic).