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Ch.19 - Electrochemistry
Tro - Chemistry: A Molecular Approach 4th Edition
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Tutti i libri di testoTro 4th EditionCh.19 - ElectrochemistryProblema 109c
Capitolo 19, Problema 109c

Determine whether HI can dissolve each metal sample. If it can, write a balanced chemical reaction showing how the metal dissolves in HI and determine the minimum volume of 3.5 M HI required to completely dissolve the sample. c. 2.42 g Ag

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Identify the reaction: Determine if HI can react with silver (Ag). Silver is less reactive and does not react with non-oxidizing acids like HI, so no reaction occurs.
Since no reaction occurs, there is no need to write a balanced chemical equation for the dissolution of silver in HI.
Understand the reactivity series: Silver is below hydrogen in the reactivity series, indicating it does not react with acids like HI to produce hydrogen gas.
Conclude that since silver does not react with HI, no volume of HI is required to dissolve the silver sample.
Reaffirm the concept: The reactivity series helps predict whether a metal will react with an acid. Metals above hydrogen in the series can displace hydrogen from acids, while those below, like silver, cannot.

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Acid-Base Reactions

Acid-base reactions involve the transfer of protons (H+) between reactants. In this context, hydroiodic acid (HI) acts as a strong acid that can donate protons, potentially reacting with metals like silver (Ag). Understanding how acids interact with metals is crucial for predicting whether a metal will dissolve in an acid and for writing balanced chemical equations.
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Percorso guidato
01:09
Acid-Base Reaction

Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass. It allows us to determine the amounts of substances involved in a reaction. In this case, stoichiometry will help calculate the minimum volume of 3.5 M HI needed to dissolve 2.42 g of Ag by using the molar mass of silver and the balanced chemical equation.
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Percorso guidato
01:16
Stoichiometry Concept

Molarity

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. In this problem, the concentration of HI is given as 3.5 M, which is essential for calculating the volume required to dissolve the silver sample. Understanding molarity is key to performing dilution calculations and determining how much of a solution is needed to achieve a desired reaction.
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Percorso guidato
01:13
Molarity
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