Question 10. A balloon containing an ideal gas is initially kept in an evacuated

Question

Question 10. 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 statement is true at the end of the 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 remains constant (D) Both internal energy and the enthalpy of the gas increase

Explanation / Answer

C) Both internal energy and enthalpy of gas remains constant.

It is because in free expansion work done by gas is zero and there is no change in internal energy.

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