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Assuming that water vapour is an ideal gas, the internal energy change (ΔU) when 1 mol of water is vapourised at 1 bar pressure and 100°C, (given : molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol–1 and R = 8.3 J mol–1 K–1) will be [2007] 
  • a)
    41.00 kJ mol–1
  • b)
    4.100 kJ mol–1
  • c)
    3.7904 kJ mol–1
  • d)
    37.904 kJ mol–1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Assuming that water vapour is an ideal gas, the internal energy change...
Given ΔH = 41 kJ mol–1 = 41000 J mol–1
T = 100°C = 273 + 100 = 373 K, n = 1
ΔU = ΔH – DnRT = 41000 – (2 × 8.314 × 373)
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Assuming that water vapour is an ideal gas, the internal energy change (ΔU) when 1 mol of water is vapourised at 1 bar pressure and 100°C, (given : molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol–1 and R = 8.3 J mol–1 K–1) will be [2007]a)41.00 kJ mol–1b)4.100 kJ mol–1c)3.7904 kJ mol–1d)37.904 kJ mol–1Correct answer is option 'D'. Can you explain this answer?
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Assuming that water vapour is an ideal gas, the internal energy change (ΔU) when 1 mol of water is vapourised at 1 bar pressure and 100°C, (given : molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol–1 and R = 8.3 J mol–1 K–1) will be [2007]a)41.00 kJ mol–1b)4.100 kJ mol–1c)3.7904 kJ mol–1d)37.904 kJ mol–1Correct answer is option 'D'. 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 Assuming that water vapour is an ideal gas, the internal energy change (ΔU) when 1 mol of water is vapourised at 1 bar pressure and 100°C, (given : molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol–1 and R = 8.3 J mol–1 K–1) will be [2007]a)41.00 kJ mol–1b)4.100 kJ mol–1c)3.7904 kJ mol–1d)37.904 kJ mol–1Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assuming that water vapour is an ideal gas, the internal energy change (ΔU) when 1 mol of water is vapourised at 1 bar pressure and 100°C, (given : molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol–1 and R = 8.3 J mol–1 K–1) will be [2007]a)41.00 kJ mol–1b)4.100 kJ mol–1c)3.7904 kJ mol–1d)37.904 kJ mol–1Correct answer is option 'D'. Can you explain this answer?.
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