1. Tardigrade
  2. Question
  3. Chemistry
  4. The standard reduction potential at 298 K for the following half cell reaction Zn2+(aq) + 2e - → Zn(s); E0 =-0.762 V Cr3+(aq) + 3e- → Cr(s) ; E0 = 0.740 V 2H+(aq) + 2e -→ Hz(g); E0=0.0 V F2(g)+2e-→ 2F-(aq); E0=2.87 V Which of the following is strongest reducing agent ?

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Q. The standard reduction potential at $298\, K$ for the following half cell reaction
$Zn^{2+}(aq) + 2e ^{-} \to Zn(s); E^{0} =-0.762\,V$
$Cr^{3+}(aq) + 3e^{-} \to Cr_{(s)} ; E^{0} = 0.740\, V$
$2H^{+}(aq) + 2e ^{-}\to Hz(g); E^{0}=0.0\,V$
$F_2(g)+2e^{-}\to 2F^{-}(aq); E^{0}=2.87\,V$
Which of the following is strongest reducing agent ?

KCETKCET 2017Redox Reactions

Solution:

More the negative value of reduction potential. higher the reducing power, thus the strongest reducing agent is zinc.