Ethanol (CH₃CH₂OH) Has Been Suggested as an Alternative Fuel Source $\Delta$

question 84

Multiple Choice

Ethanol (CH₃CH₂OH) has been suggested as an alternative fuel source. Ethanol's enthalpy of combustion is $\Delta$ H_comb = -1,368 kJ/mol, and its density is 0.789 g/mL. What is the fuel density of ethanol (kJ/mL) ?

• A) 3.75 kJ/mL
• B) 12.8 kJ/mL
• C) 1.28 kJ/mL
• D) 23.4 kJ/mL
• E) 37.5 kJ/mL

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Definitions:

Pyridine

A basic nitrogen-containing heterocyclic compound, often used as a solvent and starting material in organic synthesis.

Benzene

A simple aromatic hydrocarbon with the formula C6H6, known for its ring structure of six carbon atoms connected by alternating double and single bonds.

Electrophilic Aromatic Substitution

A reaction type in which an electrophile replaces a hydrogen atom on an aromatic ring, often leading to functionalization of the ring.

Pyridine

A basic heterocyclic organic compound with the formula C5H5N, featuring a six-membered ring with one nitrogen atom.