1.

Given (i) \[Mn{{O}_{4}}^{-}+8{{H}^{+}}+5{{e}^{-}}\xrightarrow{{}}\]\[M{{n}^{2+}}+4{{H}_{2}}\,O\] (ii) \[Mn{{O}_{2}}+4{{H}^{+}}+2{{e}^{-}}\xrightarrow{{}}\]\[M{{n}^{2+}}+2{{H}_{2}}\,O{{E}^{0}}={{x}_{2}}V\] Find \[{{E}^{0}}\] for the following reaction \[Mn{{O}_{4}}^{-}+4{{H}^{+}}+3{{e}^{-}}\xrightarrow{{}}Mn{{O}_{2}}+2{{H}_{2}}\,O\]

A. \[{{x}_{2}}-{{x}_{1}}\]
B. \[{{x}_{1}}-{{x}_{2}}\]
C. \[\frac{5{{x}_{1}}-2{{x}_{2}}}{3}\]
D. \[\frac{2{{x}_{1}}-5{{x}_{2}}}{3}\]
Answer» D. \[\frac{2{{x}_{1}}-5{{x}_{2}}}{3}\]


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