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Ch.4 - Reactions in Aqueous Solution
McMurry - Chemistry 8th Edition
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Tutti i libri di testoMcMurry 8th EditionCh.4 - Reactions in Aqueous SolutionProblema 123a
Capitolo 4, Problema 123a

(a) Use the following reactions to arrange the elements A, B, C, and D in order of their decreasing ability as reducing agents:

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Reducing Agents

A reducing agent is a substance that donates electrons in a chemical reaction, thereby reducing another substance. The strength of a reducing agent is determined by its ability to lose electrons easily. Elements that are more electropositive, such as alkali metals, typically serve as stronger reducing agents due to their low ionization energies.
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Oxidizing and Reducing Agents

Electrochemical Series

The electrochemical series is a list of elements arranged by their standard electrode potentials. This series helps predict the tendency of a substance to act as a reducing or oxidizing agent. Elements higher in the series are more likely to be reduced, while those lower are more likely to be oxidized, thus serving as stronger reducing agents.
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Electrochemical Cells

Reaction Context

The context of the reactions provided is crucial for determining the reducing abilities of elements A, B, C, and D. Different reactions can highlight different properties of the elements, such as their reactivity with specific oxidizing agents. Analyzing the products and conditions of these reactions will provide insight into the relative strengths of the reducing agents.
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Neither strontium (Sr) nor antimony (Sb) is shown in the activity series of Table 4.5. Based on their positions in the periodic table, which would you expect to be the better reducing agent? Will the following reaction occur? Explain.

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(b) Which of the following reactions would you expect to occur according to the activity series you established in part (a)?

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(a) Use the following reactions to arrange the elements A, B, C, and D in order of their decreasing ability as reducing agents:

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(b) Which of the following reactions would you expect to occur according to the activity series you established in part (a)?

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Iodine, I2, reacts with aqueous thiosulfate ion in neutral solution according to the balanced equation How many grams of I2 are present in a solution if 35.20 mL of 0.150 M Na2S2O3 solution is needed to titrate the I2 solution?
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