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One mole of an ideal monoatomic gas expands isothermally against constant external pressure of 1 atm from initial volume of 1L to a state where its final pressure becomes equal to external pressure. If initial temperature of gas is 300 K then total entropy change of system in the above process is : 
[R = 0.082 L atm mol–1 K–1 = 8.3 J mol–1K–1].
  • a)
    0
  • b)
    Rln (24.6)
  • c)
    R ln (2490)
  • d)
    3/2 Rln(24.6)
Correct answer is option 'B'. Can you explain this answer?
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The entropy change of an ideal gas in an isothermal process can be calculated using the formula:

ΔS = nR ln(Vf/Vi)

where ΔS is the entropy change, n is the number of moles of gas, R is the gas constant, and Vf and Vi are the final and initial volumes of the gas, respectively.

In this case, n = 1 mole, R = 0.082 L atm mol^(-1) K^(-1), Vi = 1 L, and Vf is the final volume of the gas.

Since the final pressure of the gas becomes equal to the external pressure (1 atm), we can use the ideal gas law to find the final volume:

PfVf = nRT

1 atm * Vf = 1 mole * 0.082 L atm mol^(-1) K^(-1) * 300 K

Vf = 24.6 L

Substituting the values into the entropy change formula:

ΔS = (1 mole) * (0.082 L atm mol^(-1) K^(-1)) * ln(24.6 L / 1 L)

ΔS ≈ 2.02 J/K

Therefore, the total entropy change of the system in the given process is approximately 2.02 J/K.
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One mole of an ideal monoatomic gas expands isothermally against constant external pressure of 1 atm from initial volume of 1L to a state where its final pressure becomes equal to external pressure. If initial temperature of gas is 300 K then total entropy change of system in the above process is :[R = 0.082 L atm mol–1 K–1 = 8.3 J mol–1K–1].a)0b)Rln (24.6)c)R ln (2490)d)3/2 Rln(24.6)Correct answer is option 'B'. Can you explain this answer?
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One mole of an ideal monoatomic gas expands isothermally against constant external pressure of 1 atm from initial volume of 1L to a state where its final pressure becomes equal to external pressure. If initial temperature of gas is 300 K then total entropy change of system in the above process is :[R = 0.082 L atm mol–1 K–1 = 8.3 J mol–1K–1].a)0b)Rln (24.6)c)R ln (2490)d)3/2 Rln(24.6)Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about One mole of an ideal monoatomic gas expands isothermally against constant external pressure of 1 atm from initial volume of 1L to a state where its final pressure becomes equal to external pressure. If initial temperature of gas is 300 K then total entropy change of system in the above process is :[R = 0.082 L atm mol–1 K–1 = 8.3 J mol–1K–1].a)0b)Rln (24.6)c)R ln (2490)d)3/2 Rln(24.6)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One mole of an ideal monoatomic gas expands isothermally against constant external pressure of 1 atm from initial volume of 1L to a state where its final pressure becomes equal to external pressure. If initial temperature of gas is 300 K then total entropy change of system in the above process is :[R = 0.082 L atm mol–1 K–1 = 8.3 J mol–1K–1].a)0b)Rln (24.6)c)R ln (2490)d)3/2 Rln(24.6)Correct answer is option 'B'. Can you explain this answer?.
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