An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is

Options

A. An aldehyde
B. A primary alcohol
C. A secondary alcohol
D. A ketone

Explanation

To solve the problem, we need to identify the oxygen-containing organic compound that, upon oxidation, forms a carboxylic acid and has a molecular mass that increases by 14 units.

### Step-by-Step Solution:

**Step 1: Understand the Oxidation Process**
- When an organic compound is oxidized to form a carboxylic acid, it can either be a primary alcohol or an aldehyde.
- Primary alcohols (R-CH2OH) are oxidized to aldehydes (R-CHO) and then to carboxylic acids (R-COOH).
- Aldehydes (R-CHO) can also be directly oxidized to carboxylic acids (R-COOH).

**Hint for Step 1:** Remember that oxidation of alcohols and aldehydes leads to the formation of carboxylic acids.

**Step 2: Analyze the Molecular Mass Change**
- The problem states that the molecular mass of the organic compound increases by 14 units upon oxidation.
- The oxidation of a primary alcohol to a carboxylic acid involves the addition of one oxygen atom and the removal of two hydrogen atoms.
- The molecular mass change can be calculated as follows:
- Adding one oxygen (O) = 16 g/mol
- Removing two hydrogens (2H) = -2 g/mol
- Net change = 16 g/mol - 2 g/mol = 14 g/mol

**Hint for Step 2:** Calculate the molecular mass change due to the addition of oxygen and removal of hydrogen.

**Step 3: Identify the Organic Compound**
- Since we are looking for a compound that has a molecular mass that increases by 14 units, we can conclude that the organic compound must be a primary alcohol.
- The primary alcohol will oxidize to form a carboxylic acid, which matches the criteria given in the problem.

**Hint for Step 3:** Consider the structure of primary alcohols and their oxidation products.

**Step 4: Conclusion**
- The organic compound that fits the criteria of being oxidized to a carboxylic acid with a molecular mass increase of 14 units is a primary alcohol.

**Final Answer:** The organic compound is a primary alcohol.