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Get Full Access to Chemistry: The Central Science - 14 Edition - Chapter 17 - Problem 17.34
Get Full Access to Chemistry: The Central Science - 14 Edition - Chapter 17 - Problem 17.34

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# Compare the titration of a strong, monoprotic acid with a strong base to the titration of a weak, monoprotic acid with a strong base. Assume the strong

ISBN: 9780134414232 1274

## Solution for problem 17.34 Chapter 17

Chemistry: The Central Science | 14th Edition

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Problem 17.34 Compare the titration of a strong, monoprotic acid with a strong base to the titration of a weak, monoprotic acid with a strong base. Assume the strong and weak acid solutions initially have the same concentrations. Indicate whether the following statements are true or false. (a) More base is required to reach the equivalence point for the strong acid than the weak acid. (b) The pH at the beginning of the titration is lower for the weak acid than the strong acid. (c) The pH at the equivalence point is 7 no matter which acid is titrated.
Step-by-Step Solution:

Step 1 of 5) When the concentrations of reactants and products are nonstandard, we must calculate Q in order to determine. We illustrate how this is done in Sample Exercise 19.11. At this stage in our discussion, therefore, it becomes important to note the units used to calculate Q when using Equation 19.19. The convention used for standard states is used when applying this equation: In determining the value of Q, the concentrations of gases are always expressed as partial pressures in atmospheres and solutes are expressed as their concentrations in molarities. Many desirable chemical reactions, including a large number that are central to living systems, are nonspontaneous as written. For example, consider the extraction of copper metal from the mineral chalcocite, which contains Cu2S. The decomposition of Cu2S to its elements is nonspontaneous: Because it is very positive, we cannot obtain Cu(s) directly via this reaction. Instead, we must find some way to “do work” on the reaction to force it to occur as we wish. We can do this by coupling the reaction to another one so that the overall reaction is spontaneous. For example, we can envision the S(s) reacting with O21g2 to form SO21g2:

Step 2 of 2

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