Terephthalic Acid, Used in the Production of Polyester Fibers and Films

question 15

Multiple Choice

Terephthalic acid, used in the production of polyester fibers and films, is composed of carbon, hydrogen, and oxygen. When 0.6943 g of terephthalic acid was subjected to combustion analysis it produced 1.471 g CO₂ and 0.226 g H₂O. What is its empirical formula?

• A)C ₂H ₃O ₄
• B)C ₃H ₄O ₂
• C)C ₄H ₃O ₂
• D)C ₅H ₁₂O ₄
• E)C ₂H ₂O

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