A hydrocarbon has three carbon atoms. Write down its molecular formulae as
acid derivative

Explanation

To find the molecular formula of a hydrocarbon with three carbon atoms as an acid derivative, we can follow these steps:

### Step 1: Identify the Hydrocarbon
We know that a hydrocarbon consists of carbon (C) and hydrogen (H) atoms. In this case, we have three carbon atoms.

### Step 2: Determine the Acid Derivative
An acid derivative typically contains a carboxylic acid functional group (-COOH). For a hydrocarbon with three carbon atoms, we can use one of the carbon atoms to form this carboxylic acid group.

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