At Constant Pressure and 25°C,what Is Δ_rH° for the Following

question 62

Multiple Choice

At constant pressure and 25°C,what is Δ_rH° for the following reaction 2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + H₂O(l)
If the complete consumption of 22.7 g of C₂H₆ liberates -1178 kJ of heat energy?

• A) -3120 kJ/mol-rxn
• B) -1560 kJ/mol-rxn
• C) -1780 kJ/mol-rxn
• D) -889 kJ/mol-rxn
• E) -788 kJ/mol-rxn

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Definitions:

Insight Learning

Learning that occurs suddenly through understanding the relationships between various parts of a problem.

Trial And Error

A problem-solving method that involves attempting different solutions and eliminating those that fail to solve the problem until the correct one is found.

Latent Learning

Learning that occurs without any obvious reinforcement or immediate demonstration of understanding, becoming apparent only when it is needed.

Classical Conditioning

An associative learning process where the consistent pairing of two stimuli facilitates a response that initially originates from the second stimulus but later originates from the first stimulus alone.