1. Tardigrade
  2. Question
  3. Chemistry
  4. Strongest reducing agent among the following is (i) Na ++ e - longrightarrow Na ( s ) E °=-2 ⋅ 71 V (ii) Al 3+3 e - longrightarrow Al ( s ) E °=-1 ⋅ 66 V (iii) F 2 text (g) +2 e - longrightarrow 2 F - E °=+2 ⋅ 87 V (iv) 2 H 2 O +2 e- longrightarrow H 2(g)+2 OH (a q)- E°=-0.83 V

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Q. Strongest reducing agent among the following is
(i) $Na ^{+}+ e ^{-} \longrightarrow Na _{( s )} E ^{\circ}=-2 \cdot 71\, V$
(ii) $Al ^3+3 e ^{-} \longrightarrow Al _{( s )} E ^{\circ}=-1 \cdot 66\, V$
(iii) $F _{2 \text { (g) }}+2 e ^{-} \longrightarrow 2 F ^{-} E ^{\circ}=+2 \cdot 87 \,V$
(iv) $2 H _2 O +2 e^{-}\longrightarrow H _{2(g)}+2 OH _{(a q)}^{-} E^{\circ}=-0.83 \,V$

COMEDKCOMEDK 2015Redox Reactions

Solution:

Lower the $E^\circ$ value (more negative), stronger is the reducing agent.