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)
A. A
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
Related: Chemistry — Thermodynamics (C) · All PYQ Banks