The Combustion of Acetylene in the Presence of Excess Oxygen

question 122

Multiple Choice

The combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water: 2C₂H₂ (g) + 5O₂ (g) → 4CO₂ (g) + 2H₂O (l)
The value of ΔS° for this reaction is ________ J/K ∙ mol.

• A)+689.3
• B)+122.3
• C)+432.4
• D)-122.3
• E)-432.4

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Definitions:

Schemes

Cognitive structures or patterns of behavior through which individuals process and understand their environment.

Mental Structures

Cognitive frameworks that organize thought, understanding, and knowledge about the world.

Object Permanence

The understanding that objects continue to exist even when they cannot be seen, heard, or touched.

Conservation

In cognitive development, the understanding that certain properties of objects, such as volume or mass, remain the same despite changes in the forms or arrangements of those objects.