Multiple Choice
Which of the following is the correct molecular formula for butane?
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3. Chemical Reactions
Molecular Formula
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Which of the following best describes the molecular formula of gluten?
A
Gluten does not have a single molecular formula because it is a mixture of proteins.
B
C2H5OH
C
C6H12O6
D
C12H22O11
Verified step by step guidance1
Understand that a molecular formula represents the exact number and types of atoms in a single molecule of a pure substance.
Recognize that gluten is not a single pure compound but rather a complex mixture of different proteins found in wheat and related grains.
Since proteins are large biomolecules made up of amino acid chains, their composition varies and does not correspond to a single fixed molecular formula.
Compare the given options: C2H5OH (ethanol), C6H12O6 (glucose), and C12H22O11 (sucrose) are all well-defined molecules with specific molecular formulas, unlike gluten.
Conclude that gluten cannot be represented by a single molecular formula because it is a mixture of proteins, not a single chemical compound.
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