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

question 13

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. What volume of ethanol (d = 0.789 g/mL) is required to produce the same amount of energy as 1 gallon of gasoline, which can be modeled as isooctane (C₈H₁₈) with an energy density of 32.9 kJ/mL? (1 gal = 3.785 L; d = 0.703 g/mL)

• A) 1.41 gal
• B) 1.00 gal
• C) 0.90 gal
• D) 0.85 gal
• E) 1.15 gal

Apply the Cahn-Ingold-Prelog priority rules to assess stereochemistry.

Analyze molecules for symmetry elements and determine their chirality.

Understand and apply the concept of conformational isomerism.

Identify the relationships between different isomers and predict properties related to their structural differences.

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