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JEE Advanced2025ChemistryThermodynamics (C)Actual

Considering ideal gas behavior, the expansion work done (in kJ) when 144 g of water is electrolyzed completely under constant pressure at 300 K is _____ Use: Universal gas constant ( R )=8.3 ~J ~K ⁻¹ ~mol ⁻¹ ; Atomic mass (in amu): H =1, O =16 (mark absolute value as answer)

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in official answer key answer was [-29.95 to -29.8] OR [29.8 to 29.95], we have updated the question to make it valid. array lcc H ₂ O (l) & H ₂( ~g )+ & 1 2 O ₂( ~g ) 144 ~g & - & - 8 ~mol & 8 ~mol & 4 ~mol ~W =- P ~V = & -( n ) RT array aligned & Change in gaseous moles =12 & W =- 12 8.3 300 1000 ~kJ =-29.88 ~kJ . aligned

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