electrochemistry

Related Questions

• If a strip of $Cu$ metal is placed in a solution of ferrous sulphate

  ---

• $C{{u}^{+}}$ ion is not stable in aqueous solution because of disproportionation reaction. ${{E}^{0}}$ value for disproportionation of $C{{u}^{+}}$ is (Given $E_{C{{u}^{2+}}/C{{u}^{+}}}^{0}=0.15,\,E_{C{{u}^{2+}}/Cu}^{0}=0.34V)$

  ---

• Electrode potential data are given below : $F{{e}^{3+}}(aq)+{{e}^{-}}\to F{{e}^{-1}}(aq);\,{{E}^{0}}=+0.77\,V$; $A{{l}^{3+}}(aq)+3{{e}^{-}}\to A{{l}^{-1}}(s);\,{{E}^{0}}=-1.66\,V$; $B{{r}_{2}}(aq)+2{{e}^{-}}\to 2B{{r}^{-}}(aq);\,{{E}^{0}}=+1.08\,V$; Based on the data given above, reducing power of $F{{e}^{2+}}$, $Al$ and $B{{r}^{-}}$ will increase in the order

  ---

• In order to separate oxygen from one mole of $H_2O$ the required quantity of coulomb would be

  ---

• The standard reduction potential for $F{{e}^{2+}}/Fe$ and $S{{n}^{2+}}/Sn$ electrodes are – 0.44 and – 0.14 volt respectively. For the given cell reaction $F{{e}^{2+}}+Sn\to Fe+S{{n}^{2+}}$, the standard emf is

  ---