CHEM 1010 Final Exam Questions
What is reduction? - Answer The gain of electrons
If I have a diagram and the light molecule becomes negative and the dark molecule becomes
positive which atom is being oxidized - Answer only the darker one because it becomes more
positive as it loses electrons
In the following half reaction, 2NA ---- 2NA+, how many electrons are gained or lost? - Answer
2 electrons are lost because the NA became more positive therefore it lost electrons
Which materials is most likely to act as an oxidizing agent? - Answer CL2 or anything on the
most electronegative side of the periodic table, they are the most likely to act as an oxidizing
agent
What might the relationship be between an elements ionization energy and its ability to behave
as an oxidizing agent - Answer As the ionization energy increases, the ability of an element
to act as an oxidizing agent increases
What element is behaving as the oxidizing agent in the following equation and what is the
reducing agent?
SN 2+ + 2AG ------ SN + 2 AG+ - Answer Ag is being oxidized because it is losing electrons and
becoming more positive therefore Ag is the Reducing agent and that makes Sn2+ the oxidizing
agent
The general chemical equation for photosynthesis is shown below. Through this reaction is the
carbon oxidized or reduced and how can you tell?
6 CO2 + 6H20-----C6H12O6 + 6 CO2 - Answer Reduced since the carbon dioxide there are
two oxygen atoms for every one carbon but within the product glucose there is only one oxygen
for every one carbon
How can you tell if something is reduced just by looking at it - Answer it binds more to
hydrogen than to oxygen
What oxidation reduction reaction is taking place at the anode - Answer Zn---Zn2+ + 2e-
What oxidation reduction reaction is taking place at the cathode - Answer 2 NH4+ + 2e- ------
2NH3 + H2
What is reduction? - Answer The gain of electrons
If I have a diagram and the light molecule becomes negative and the dark molecule becomes
positive which atom is being oxidized - Answer only the darker one because it becomes more
positive as it loses electrons
In the following half reaction, 2NA ---- 2NA+, how many electrons are gained or lost? - Answer
2 electrons are lost because the NA became more positive therefore it lost electrons
Which materials is most likely to act as an oxidizing agent? - Answer CL2 or anything on the
most electronegative side of the periodic table, they are the most likely to act as an oxidizing
agent
What might the relationship be between an elements ionization energy and its ability to behave
as an oxidizing agent - Answer As the ionization energy increases, the ability of an element
to act as an oxidizing agent increases
What element is behaving as the oxidizing agent in the following equation and what is the
reducing agent?
SN 2+ + 2AG ------ SN + 2 AG+ - Answer Ag is being oxidized because it is losing electrons and
becoming more positive therefore Ag is the Reducing agent and that makes Sn2+ the oxidizing
agent
The general chemical equation for photosynthesis is shown below. Through this reaction is the
carbon oxidized or reduced and how can you tell?
6 CO2 + 6H20-----C6H12O6 + 6 CO2 - Answer Reduced since the carbon dioxide there are
two oxygen atoms for every one carbon but within the product glucose there is only one oxygen
for every one carbon
How can you tell if something is reduced just by looking at it - Answer it binds more to
hydrogen than to oxygen
What oxidation reduction reaction is taking place at the anode - Answer Zn---Zn2+ + 2e-
What oxidation reduction reaction is taking place at the cathode - Answer 2 NH4+ + 2e- ------
2NH3 + H2
