A calibration curve plotting E
A calibration curve plotting E vs. pTi is used to measure theconcentration of Ti2 in solution at 25 °C using a solid Tielectrode. What is the slope of the calibration curve?
Answer:
This exercise is solved from the begining to the end. Thereaction should take place toward the reduction of Ti2+to Ti taking or toward the oxidation of Ti to Ti2+giving 2 electrons.
Its potentials are solved by Nernst equation.
In thereduction: 
which potential E0= -1.63V
The Nernst potential is:
Then, its respective graph is:
On? the other hand, itsoxidation is: 
and its standard potential is E0=1.63V
It Nernst potential equation is:
Its graph is the next one:
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