WorksheetsREDOX reactions
Total questions: 18
Worksheet time: 23mins
Oxygen mostly has an oxidation number of...
2CaO--> 2Ca + O2
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
An increase in oxidation number.
more acidic
reduction
less basic
oxidation
The sum of the oxidation numbers in SCN- is equivalent to
0
-1
+1
+3
Reduction is when a substance ___
gains protons
loses protons
gains electrons
loses electrons
The "OIL" in "OILRIG" stands for: ___
oxidation is loss of electrons
oxidation is loss of protons
only in lieu of reactions
Office of Immigration Litigation
When you study redox reactions it's absolutely essential to keep track of ___
the pesos
the electrons
the element symbols
the dollars
The oxidation number of hydrogen, in the diatomic molecule H2, is ___
0
1
-1
2
The oxidation number of sulfur in S8, its most common allotrope, is ___
0
1
-8
8
What is the oxidation number of N in NO2-1?
which element, if any, is oxidized?
4Fe + 3O2 --> 2Fe2O3
What is the oxidation number of Cr in Cr2O72- ?
+14
+6
-6
-14
Name the oxidising agent in the following reaction:
nitrogen + hydrogen -> ammonia
nitrogen
hydrogen
ammonia
