Quiz #3 Prep EE
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25 Terms
what are the other acceptors other than O2?
Nitrate, Sulfate, Carbon Dioxide, Ferric Iron.
What is typically a donor
Food.
In C2H6O + NO3- + H+ → CO2 + N2 + H2O … Who is the donor and who is the acceptor
Nitrate, NO3- is the acceptor while C2H6O is the donor.
In Fe3+ + e- → Fe2+ … Who is the donor and who is the acceptor
Ferric iron, Fe3+ is the acceptor while e- is the donor.
What is the name for this reaction: Fe3+ + e- → Fe2+
Iron Reduction
What is the name of Fe2+
Ferrous Iron
In SO42- + 8e- + 10H+ → H2S + 4H2O who is the donor and who is the acceptor
Sulfate, SO42- is the acceptor while e- is the donor.
What is the name for this reduction: SO42- + 8e- + 10H+ → H2S + 4H2O
Sulfate reduction or Sulfido genesis
In CO2 + 8e- + 8H+ → CH4 + 2H2O Who is the donor and who is the acceptor
Carbon Dioxide, CO2 is the acceptor while e- is the donor.
What are the other types of electron donors?
Chlorinated organic compounds, like chloroform.
What is hydro genesis
When a halogenated organic compound (one or more hydrogens replaced by a halogen: F,Cl,Br) is used as an e- acceptor
What is it called when microbes can grow as a result of hydrogenesis?
Organohalide Respiration
Is Organohalide Respiration good?
Yes, turns chlorinated solvents into less harmful compounds.
If there is a presence of O2 and it is an e- acceptor, what is it called?
Aerobic.
If there is no O2 and you need an e- acceptor, what is that called?
Anaerobic.
What is the K equilibrium equation? What are the units used
K = products/reactants …. units are in M (mol/L)
What is the dissociation constant of H20
Kw = 10-14
What is a neutral pH?
10-7
What is -log[H+]
This equals a pH of 7.
What are the functions of acids and bases?
Acids donate a proton or hydrogen, while bases accept the proton.
What are the properties of H2O and wastewater?
weak acids, weak bases and salts
What are the strong acids?
HCl, HNO3, H2SO4, HBr (they all dissociate, and lose their hydrogen) note that strong bases also dissociate
How is total concentration measured
mol / L
What does it mean for a Ka to be greater than 1?
It is a strong acid.
What does a large pKa mean for an acid?
it is weak.
Note 
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