http://www.ck12.org Chapter 22. Oxidation-Reduction Reactions
b. F−
c. S
d. Cr^3 +- Are metals that experience corrosion being oxidized or reduced? Explain.
Problems
- Determine what is being oxidized and what is being reduced in the following reactions. For molecular
compounds, you may need to refer to a table of electronegativities in order to determine the direction in
which electrons are shifted.
a. 4Na(s) + O 2 (g)→2Na 2 O(s)
b. 6Li(s) + N 2 (g)→2Li 3 N(s)
c. 2Al(s) + 3NiCl 2 (aq)→2AlCl 3 (aq) + 3Ni(s)
d. Br 2 (l) + 2KI(aq)→2KBr(aq) + I 2 (s)
e. N 2 (g) + 3H 2 (g)→2NH 3 (g)
f. C 2 H 4 (g) + H 2 (g)→C 2 H 6 (g) - Identify the oxidizing and reducing agents for each reaction in problem 6.
- Could lead blocks be attached to the hull of a steel (mostly iron) ship in order to protect the ship from
corrosion? Explain why or why not. - Predict the products and write a balanced equation for the following redox reactions. Identify the oxidizing
and reducing agents for each.
a. potassium + chlorine→
b. magnesium + hydrochloric acid→
c. copper + silver nitrate→
d. propane (C 3 H 8 ) + oxygen→
Further Reading / Supplemental Links
- What is Redox?, http://www.kentchemistry.com/links/Redox/WhatisRedox.htm
- Definitions of Oxidation and Reduction (Redox), http://www.chemguide.co.uk/inorganic/redox/definitions.h
tml
Points to Consider
An oxidation number is a number that is assigned to an atom that indicates its degree of oxidation.
- How are oxidation numbers determined?
- How can oxidation numbers assist in determining if a given reaction is a redox reaction?