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JEE Main 2002
Exam
JEE Main
Year
2002
Subject
Chemistry
Chapter
Redox Reactions

JEE Main 2002 · Chemistry · Redox Reactions

For the reactions, C+O_2 CO_2 ; Δ H=-393 ~J 2 Zn+O_2 2 ZnO ; Δ...

For the reactions, C+O2⟶CO2;ΔH=−393 J\mathrm{C}+\mathrm{O}_2 \longrightarrow \mathrm{CO}_2 ; \Delta \mathrm{H}=-393 \mathrm{~J} 2Zn+O2⟶2ZnO;ΔH=−412 J2 \mathrm{Zn}+\mathrm{O}_2 \longrightarrow 2 \mathrm{ZnO} ; \Delta \mathrm{H}=-412 \mathrm{~J}

Options

  1. Acarbon can oxidise Zn
  2. Boxidation of carbon is not feasible
  3. Coxidation of Zn is not feasible
  4. DZn can oxidise carbon

Correct answer

D. Zn can oxidise carbon

Step-by-step solution

ΔH\Delta \mathrm{H} negative shows that the reaction is spontaneous. Higher value for Zn\mathrm{Zn} shows that the reaction is more feasible.
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