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CLEP Chemistry

Category - Multiple Choice

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Which of the following compounds has a single pi bond? Hint: draw structures of each.

Ammonia
Sulfuric Acid
Methane
Hydrogen cyanide
Hydrogen Peroxide

Explanation

Answer: B. Ammonia (NH₃) has 3 single bonds. Hydrogen peroxide has 3 single bonds. Hydrogen cyanide has two pi bonds (triple bond), and the question asks for one. Methane has only single bonds. Only B has a double bond (2 double bonds between oxygen and sulfur), which indicates the presence of a pi bond. Students can determine this by drawing out structures and seeing the types of bonds each has.

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