Chemická reakce stříbra a sírovodíku
Vyčísli následující rovnici:
\( \textrm{Ag} + \textrm{H}_2\textrm{S} → \textrm{Ag}_2\textrm{S} + \textrm{H}_2 \)
\( \textrm{Ag} + 2\ \textrm{H}_2\textrm{S} → \textrm{Ag}_2\textrm{S} + \textrm{H}_2 \)
\( \textrm{Ag} + \textrm{H}_2\textrm{S} → 2\ \textrm{Ag}_2\textrm{S} + \textrm{H}_2 \)
\( 2\ \textrm{Ag} + \textrm{H}_2\textrm{S} → \textrm{Ag}_2\textrm{S} + \textrm{H}_2 \)
\( 2\ \textrm{Ag} + 2\ \textrm{H}_2\textrm{S} → 2\ \textrm{Ag}_2\textrm{S} + \textrm{H}_2 \)
Urči si oxidační čísla prvků. Uvědom si, jestli jde o redoxní reakci. Pokud ano, použij k vyčíslení křížové pravidlo, pokud ne, tak musíš reakce vyčíslit tzv. „by voko“.
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