Chemistry Homework Solutions
Problem
#11421

Determining potential (in acid)

When VO2+ reacts with Ti2+ in acid solution the products are V2+ and TiO2+.
a) What is the potential of the cell Pt/VO2+, V2+//TiO2+, Ti2+/Pt if all species are a 1 M .
b) Write the equilibrium constant expression and calculate the value of the equilibrium constant.

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Determining potential (in acid).doc
When VO2+ reacts with Ti2+ in acid solution the products are V2+ and
TiO2+.

a) What is the potential of the cell Pt/VO2+, V2+//TiO2+, Ti2+/Pt if all
species are a 1 M .

b) Write the equilibrium constant expression and calculate the value of
the equilibrium constant.

Eo = standard potential for half reaction

Given: V3+ + e- = V2+, Eo = - 0.255

VO2+ + 2H+ + e- = VO 2+ + H2O, Eo = 1.000

Ti3+ + e- = Ti2+, Eo = - 0.37

TiO2 + + 2H+ + e- = Ti3+ + H2O, Eo = 0.1
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