Concept explainers
A concentration cell has different concentrations of the same ions, but because of the different concentrations there is a very small voltage between the cells. This effect is especially problematic for corrosion. Consider the following overall reaction, which is assumed to occur in the presence of metallic iron:
(a) What is
(b) What is the expression for Q?
(c) What is
(d) Should concentration cells be considered another type of colligative property? Explain your answer.

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Chapter 8 Solutions
Student Solutions Manual for Ball's Physical Chemistry, 2nd
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- Calculate the maximum volume of carbon dioxide gasarrow_forwardIn galvanic cells, their potential1. can be measured with a potentiometer2. does not depend on the equilibrium constant of the reaction occurring within them3. is only calculated from the normal potentials of the electrodes they comprise4. can sometimes be considered a variation in a potential differencearrow_forwardIf some molecules in an excited state collide with other molecules in a ground state, this process1. can occur in solution and in the gas phase.2. can be treated as a bimolecular process.3. always results in collisional deactivation.4. does not compete with any other process.arrow_forward
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