Question

Balance the following redox equations :

(i) $Cr _{2} O _{7}^{2-}+ H _{2} O _{2}+ H ^{+} \longrightarrow 2 Cr ^{3+}+ O _{2}$.

(ii) $Cu _{3} P + Cr _{2} O _{7}^{2-}+ H ^{+} \longrightarrow Cu ^{2+}+ H _{3} PO _{4}+ Cr ^{3+}+ H _{2} O$

(iii) $IO _{4}^{-}+ I ^{-}+ H ^{+} \longrightarrow I _{2}+ H _{2} O$

(iv) $Zn + NaNO _{3}+ NaOH \longrightarrow Na _{2} ZnO _{2}+ H _{2} O + NH _{3}$

(v) $Al \longrightarrow\left[ Al ( OH )_{4}\right]^{-}+ H _{2} \quad$

Answer 1

Answer — Balanced Redox Reaction