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Ch.4 - Chemical Quantities & Aqueous Reactions
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.4 - Chemical Quantities & Aqueous ReactionsProblema 118
Capitolo 4, Problema 118

Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.52 g Al(OH)3.

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Identify the balanced chemical equation for the reaction: \[ \text{Al(OH)}_3 + 3\text{HCl} \rightarrow \text{AlCl}_3 + 3\text{H}_2\text{O} \]
Calculate the moles of \( \text{Al(OH)}_3 \) using its molar mass: \[ \text{Moles of Al(OH)}_3 = \frac{1.52 \text{ g}}{\text{Molar mass of Al(OH)}_3} \]
Use the stoichiometry of the balanced equation to find the moles of \( \text{HCl} \) needed: \[ \text{Moles of HCl} = 3 \times \text{Moles of Al(OH)}_3 \]
Calculate the volume of \( 0.110 \text{ M} \) \( \text{HCl} \) solution required using the formula: \[ \text{Volume (L)} = \frac{\text{Moles of HCl}}{0.110 \text{ M}} \]
Convert the volume from liters to milliliters if necessary: \[ \text{Volume (mL)} = \text{Volume (L)} \times 1000 \]

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Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions. It involves using balanced chemical equations to determine the relationships between the amounts of substances consumed and produced. In this case, stoichiometry will help us find the moles of hydrochloric acid needed to react with aluminum hydroxide.
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Stoichiometry Concept

Molarity

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. It is crucial for determining how much of a solution is needed to achieve a desired reaction. In this question, the molarity of hydrochloric acid will be used to calculate the volume required for the reaction with aluminum hydroxide.
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Molarity

Balanced Chemical Equation

A balanced chemical equation represents a chemical reaction with equal numbers of each type of atom on both sides of the equation. It provides the mole ratios needed for stoichiometric calculations. For this problem, the balanced equation between hydrochloric acid and aluminum hydroxide will indicate how many moles of HCl are required to completely react with the given mass of Al(OH)3.
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Balancing Chemical Equations
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