Verified Solution • 2025–26 Session moderate

QAIPM-2000-Ch-2966: NEET 2000 Chemistry - Class 11 AIPM-2000-Ch-2966 Solution: \(2Zn+O_2 2ZnO; G^ =-616\) J; \(2Zn+S_2 2ZnS; G^ =-293\) J;…

2Zn+O2→2ZnO;ΔG∘=−6162Zn+O_2\rightarrow 2ZnO; \Delta G^\circ=-616 J; 2Zn+S2→2ZnS;ΔG∘=−2932Zn+S_2\rightarrow 2ZnS; \Delta G^\circ=-293 J; S2+2O2→2SO2;ΔG∘=−408S_2+2O_2\rightarrow 2SO_2; \Delta G^\circ=-408 J. ΔG∘\Delta G^\circ for the following reaction 2ZnS+3O2→2ZnO+2SO22ZnS+3O_2\rightarrow 2ZnO+2SO_2 is

Multiple Choice Options

  • A −731-731 J
  • B −1317-1317 J
  • C −501-501 J
  • D +731 J

Step-by-Step Verified Solution

2Zn + O 2 _ 2ZnO;   _ G o = _ 616 J ....(1) 2ZnS _ 2Zn + O 2 ;   _ G o = + 293 J.....(2) S 2 + 2O 2 _ 2SO 2 ;    _ G o = _ 408 J .....(3) _ G o for the reaction can be obtained by adding (1), (2) and (3) _ _ G o = 293 - 616 - 408 = -731 J

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