Q.1.
An element's oxidation numbers became more negative during a reaction. What happened to that element?
Q.2.
Which element was reduced in the reaction below?Na + PbCl→ Pb + NaCl
Q.3.
Which element was oxidized in the reaction below?Na + PbCl2 → Pb + NaCl
Q.4.
If oxidation happened, then...
Q.5.
In a redox reaction, the species reduced
Q.6.
Which statement is true:Mg → Mg+ 2e–
Q.7.
The below reaction is an example of _________reaction.F2 → 2 F- + 2 e-
Q.8.
Identify the species reduced in the following reaction.Fe(s) + 2 Ag+(aq) → Fe2+(aq) + 2 Ag(s)
Q.9.
Determine the oxidation number of the selected element in each ion/ compound. a) N in N2O4 b) Cr in CrO4c) I in IO3-
Q.10.
What is the oxidation number of Nitrogen in HNO3