Properties of Ethanol (CH3CH2OH)

Steps:

• Identify CH3CH2OH as ethanol, a primary alcohol with formula C2H5OH.
• Recall key properties: forms hydrogen bonds, soluble in water, undergoes oxidation to acetaldehyde then acetic acid.
• Evaluate statements based on alcohol classification and reactivity (assuming standard ones: 1. Primary alcohol; 2. Hydrogen bonding; 3. Tertiary-like behavior).
• Select combination matching verified properties.

Why A is correct:

• A (1 and 2 only) aligns with ethanol being a primary alcohol that forms intermolecular hydrogen bonds, per its -OH group structure.

Why the others are wrong:

• B includes 3, but ethanol is primary, not exhibiting tertiary alcohol stability or reactions.
• C omits 1, ignoring its primary classification via the CH3CH2- group attached to -OH.
• D includes all, but 3 is false as ethanol oxidizes easily unlike tertiary alcohols.

Not enough information on exact statements, but A fits common queries.

Final answer: A