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Ch.17 - Additional Aspects of Aqueous Equilibria

Chapter 17, Problem 6d

Match the following descriptions of titration curves with the diagrams: (d) strong base added to polyprotic acid. [Section 17.3]

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Hey, everyone were told that one of the following graphs represent the titillation of a try protic acid with a strong base, which titillation curve is it. Now the key word here is going to be try protic acid. This essentially tells us that we will need three equivalence points in our graph. Now, before the addition of a base, we will only have our acid present. So our initial ph is going to be low. And since we're tight traded with a strong base, we have to end in a high ph. So those are also some notes we can use in order to determine our answer. Starting with A. We can see that we have one equivalence point, so A can't be our answer for B. We have one as well, and for C we have 12 and three. So C looks like it might be our answer. But let's go ahead and look at D For D. We only have two. So see here is going to be our final answer. And we can also see that we end in a high ph and our initial ph is low. Now, I hope that made sense. And let us know if you have any questions
Related Practice
Textbook Question

The following diagram represents a buffer composed of equal concentrations of a weak acid, HA, and its conjugate base, A-. The heights of the columns are proportional to the concentrations of the components of the buffer. (c) Which of the three represents a situation that cannot arise from the addition of either an acid or a base? [Section 17.2]

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Textbook Question

The following figure represents solutions at various stages of the titration of a weak acid, HA, with NaOH. (The Na+ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond: (b) after addition of NaOH but before the equivalence point? [Section 17.3]

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Textbook Question

Match the following descriptions of titration curves with the diagrams: (a) strong acid added to strong base. [Section 17.3]

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Textbook Question

The following graphs represent the behavior of BaCO3 under different circumstances. In each case, the vertical axis indicates the solubility of the BaCO3 and the horizontal axis represents the concentration of some other reagent. (a) Which graph represents what happens to the solubility of BaCO3 as HNO3 is added? [Section 17.5]

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Textbook Question

Ca1OH22 has a Ksp of 6.5 * 10-6. (b) If 50 mL of the solution from part (a) is added to each of the beakers shown here, in which beakers, if any, will a precipitate form? In those cases where a precipitate forms, what is its identity? [Section 17.6]

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Textbook Question

Three cations, Ni2+ , Cu2+ , and Ag+, are separated using two different precipitating agents. Based on Figure 17.23, what two precipitating agents could be used? Using these agents, indicate which of the cations is A, which is B, and which is C.[Section 17.7]

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