1.The reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. Write a bala
ID: 904251 • Letter: 1
Question
1.The reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. Write a balanced equation for this redox reaction. Write two half reactions to show how many electrons are gained or lost by each species.
Redox Reaction:
Oxidation Reaction:
Reduction Reaction:
2. Be sure to answer all parts. Hydrocarbons are compounds that contain only C and H atoms. When a hydrocarbon reacts with O2, CO2 and H2O are formed. Write a balanced equation for the combustion of the following hydrocarbon, a high-octane components of gasoline. Do not include states of matter in your answer. C8H18 (isooctane)
3.One dose of an antacid contains 750. mg each of Mg(OH)2 and Al(OH)3. How many moles of each compound are contained in a single dose? Use proper scientific notaion to report the answers.
---- × 10 mol Mg(OH)2
----× 10 mol Al(OH)
Explanation / Answer
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redox reaction:
4Al + 3O2 ---> 2Al2O3
number of electrons tranferrred = 12
Reduction half reaction
O2 +4 e-----> 2O2-
number of electrons tranferrred = 4
oxidation half reaction
Al ----> Al 3+ + 3e-
number of electrons tranferrred = 3
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