**Thermodynamics Question: Energy Transfer in a Combustion Reaction**A mixture of butane and oxygen gases are contained in a cylinder with a moveable piston lid. A spark is applied to the gases, causing them to combust and form carbon dioxide and water. The product gases expand, pushing the cylinder lid outwards. The hot product gases in the cylinder also lose heat to the surrounding air. Which one of the following statements is true?A) ΔE is positive, q is positive, w is positiveB) ΔE is positive, q is negative, w is negativeC) ΔE is negative, q is negative, w is negativeD) ΔE is negative, q is negative, w is positive---### Explanation:This question tests your understanding of energy changes in a chemical reaction, particularly combustion, and the concepts of heat (q), work (w), and changes in internal energy (ΔE) in thermodynamics.**ΔE** represents the change in internal energy of the system.**q** represents the heat exchanged (absorbed or released) by the system.**w** represents the work done by or on the system.In this scenario:- The combustion of butane and oxygen is an exothermic reaction (releases heat), so **q is negative**.- The gases expand and push the piston, doing work on the surroundings, so **w is negative** (work is done by the system).With both heat being released and work being done by the system, **ΔE** (total internal energy change) will be negative, indicating a decrease in the system’s internal energy.Hence, the correct answer is:C) ΔE is negative, q is negative, w is negative

Given, the gas expands and heat is released by the gas.

A mixture of butane and oxygen gases are contained in a cylinder with a moveable piston lid. A spark is applied to the gases, causing them to combust and form carbon dioxide and water. The product gases expand, pushing the cylinder lid outwards. The hot product gases in the cylinder also lose heat to the surrounding air. Which one of the following statements is true? A) AE is positive, q is positive, w is positive B) AE is positive, q is negative, w is negative C) AE is negative, q is negative, w is negative D) AE is negative, q is negative, w is positive

A mixture of butane and oxygen gases are contained in a cylinder with a moveable piston lid. A spark is applied to the gases, causing them to combust and form carbon dioxide and water. The product gases expand, pushing the cylinder lid outwards. The hot product gases in the cylinder also lose heat to the surrounding air. Which one of the following statements is true? A) AE is positive, q is positive, w is positive B) AE is positive, q is negative, w is negative C) AE is negative, q is negative, w is negative D) AE is negative, q is negative, w is positive

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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