Fundamental Principles
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1
a nick or scratch in moist soil creates a what in terms of corrosion?
galvanic cell
2
what is the specific heat of water (cp) in kJ/kgC)
4.18
3
how does a galvanic cell produce electricity?
through spontaneous redox
4
for corrosion to occur, the net voltage of the rxn has to be what?
negative
5
what is the net voltage equation of a galvanic cell?
Ecell = Ecathode (reduction) - Eanode(oxidation)
6
higher potential difference between two metals mean a higher or lower risk of corrosion?
higher
7
for continuously stirred tank reactor/completely mixed flow reactor, Creactor is equal to what?
Cout
8
if volume is constant then what other variable is constant?
Q
9
when dissimilar metals are in contact the more ______ one becomes the anode in a corrosion cell
electropositive
10
what is a sacrificial anode?
a metal that corrodes before the pipe
11
when does rusting occur?
when iron and steel are exposed to oxygen and water
12
what can act as a catalyst for rust?
salt and acid
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