Quiz | Oxidation-Reduction Reactions
What kind of reactions is Cu2+ (aq) + 2 e- → Cu (s) ?
Oxidation-Reduction reaction
Oxidation reaction
Reduction reaction
Galvanization reaction
What is an oxidation reaction?
The loss of electrons and a decrease in oxidation state
The loss of electrons and an increase in oxidation state
The gain of electrons and an increase in oxidation state
The gain of electrons and a decrease in oxidation state
What is the oxidation number of the carbon atom in H2CO3?
0
+2
+4
+8
What is the oxidation number of chromium atom in Cr2O72-?
+4
+6
+8
+12
What is the reducing agent in the reaction: Fe2O3 + 3 CO → 2 Fe + 3 CO2?
Fe2O3
CO
Fe
CO2
What is the reduced species in the reaction: O2 + 6 I- + 2 H2O à 2 I3- + 4 OH-?
O2
I-
H2O
OH-