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A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?
- a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant
- b)The internal energy of the gas increases from its initial value, but the enthalpy remains constant
- c)Both internal energy and enthalpy of the gas remain constant
- d)Both internal energy and enthalpy of the gas increase
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A balloon containing an ideal gas is initially kept in an evacuated an...
h = u + pV
The balloon containing the ideal gas is initially kept in an evacuated and insulated room. Since internal energy is during the process is constant, the flow work pV must also remain constant thus we may conclude that during free expansion process pV, ie. Product of specific volume and pressure change is such a way that their product remains constant. It may however called constant internal energy and constant enthalpy process.
If the clothes of a person working in the kitchen catch fire,the person is immediately covered with a blanket.When the burning clothes of a person are covered with a blanket,the supply of air to the burning clothes is cut off and hence the burning stops.
Most Upvoted Answer
A balloon containing an ideal gas is initially kept in an evacuated an...
Explanation:
Process description:
Initially, the balloon has an ideal gas confined in it, and the whole system is kept in an evacuated and insulated room. Then, the balloon ruptures and the gas fills up the entire room.
Enthalpy and Internal Energy:
Enthalpy is defined as the sum of internal energy and the product of pressure and volume of the system. Mathematically, H = U + PV. Here, H is the enthalpy, U is the internal energy, P is the pressure, and V is the volume of the system.
The internal energy of a system is the sum of the kinetic and potential energies of the molecules that make up the system. It is a state function and depends only on the current state of the system.
Analysis:
In the given process, the balloon ruptures, and the gas fills up the entire room, increasing the volume of the system. As the process is adiabatic, there is no exchange of heat between the system and the surroundings, and thus, the internal energy of the system remains constant. As the balloon is ruptured, there is no change in the pressure of the system. Hence, the enthalpy of the system also remains constant.
Therefore, both internal energy and enthalpy of the gas remain constant at the end of the above process.
Conclusion:
Option C is the correct answer.
Process description:
Initially, the balloon has an ideal gas confined in it, and the whole system is kept in an evacuated and insulated room. Then, the balloon ruptures and the gas fills up the entire room.
Enthalpy and Internal Energy:
Enthalpy is defined as the sum of internal energy and the product of pressure and volume of the system. Mathematically, H = U + PV. Here, H is the enthalpy, U is the internal energy, P is the pressure, and V is the volume of the system.
The internal energy of a system is the sum of the kinetic and potential energies of the molecules that make up the system. It is a state function and depends only on the current state of the system.
Analysis:
In the given process, the balloon ruptures, and the gas fills up the entire room, increasing the volume of the system. As the process is adiabatic, there is no exchange of heat between the system and the surroundings, and thus, the internal energy of the system remains constant. As the balloon is ruptured, there is no change in the pressure of the system. Hence, the enthalpy of the system also remains constant.
Therefore, both internal energy and enthalpy of the gas remain constant at the end of the above process.
Conclusion:
Option C is the correct answer.
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A balloon containing an ideal gas is initially kept in an evacuated an...
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A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer?
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A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer?.
A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer?.
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ample number of questions to practice A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?a)The internal energy of the gas decreases from its initial value, but the enthalpy remains constant b)The internal energy of the gas increases from its initial value, but the enthalpy remains constantc)Both internal energy and enthalpy of the gas remain constantd)Both internal energy and enthalpy of the gas increaseCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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