Redoxní reakce
Je následující reakce redoxní?
\( \textrm{Zn} + \textrm{CuSO}_4 → \textrm{Cu}+\textrm{ZnSO}_4 \)
\( \textrm{Zn}^{0} + \textrm{Cu}^\textrm{II}\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 → \textrm{Cu}^0+\textrm{Zn}^\textrm{II}\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 \)
\( \textrm{Zn}^{0} + \textrm{Cu}^\textrm{II}\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 → \textrm{Cu}^0+\textrm{Zn}^0\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 \)
\( \textrm{Zn}^{0} + \textrm{Cu}^\textrm{II}\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 → \textrm{Cu}^\textrm{II}+\textrm{Zn}^0\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 \)
\( \textrm{Zn}^{0} + \textrm{Cu}^\textrm{II}\textrm{S}^\textrm{VI}\textrm{O}^\textrm{−II}_4 → \textrm{Cu}^0+\textrm{Zn}^\textrm{II}\textrm{S}^\textrm{IV}\textrm{O}^\textrm{−II}_4 \)
Urči si oxidační čísla látek v reakci. Pokud se číslo zvyšuje, tak se rovná o oxidaci, pokud snižuje, tak je to redukce. Prvky mají oxidační číslo 0.
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