Kemija - 2024./25. ljeto - 21.

A. \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-} \rightarrow 2 \mathrm{~CO}_{2}+2 \mathrm{~e}^{-}\)

B. \(10 \mathrm{~CO}_{2}+10 \mathrm{~e}^{-} \rightarrow 5 \mathrm{~C}_{2} \mathrm{O}_{4}^{2-}\)

C. \(\mathrm{MnO}_{4}^{-}+8 \mathrm{~H}^{+}+5 \mathrm{~e}^{-} \rightarrow \mathrm{Mn}^{2+}+4 \mathrm{~H}_{2} \mathrm{O}\)

D. \(2 \mathrm{~Mn}^{2+}+8 \mathrm{~H}_{2} \mathrm{O} \rightarrow 2 \mathrm{~MnO}_{4}^{-}+16 \mathrm{~H}^{+}+10 \mathrm{~e}^{-}\)