Domanda del libro di testo
Suppose you have 3.00 g of powdered zinc metal, 3.00g of powdered silver metal and 500.0 mL of a 0.2 M copper(II) nitrate solution. (b) What is the net ionic equation that describes this reaction?
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Ch.4 - Reactions in Aqueous Solution
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 4, Problema 102b
Citric acid, C6H8O7, is a triprotic acid. It occurs naturally in citrus fruits like lemons and has applications in food flavouring and preservatives. A solution containing an unknown concentration of the acid is titrated with KOH. It requires 23.20 mL of 0.500 M KOH solution to titrate all three acidic protons in 100.00 mL of the citric acid solution. Calculate the molarity of the citric acid solution.
Guida verificata passo dopo passo1
Identify the balanced chemical equation for the reaction: \[ \text{C}_6\text{H}_8\text{O}_7 + 3\text{KOH} \rightarrow \text{K}_3\text{C}_6\text{H}_5\text{O}_7 + 3\text{H}_2\text{O} \].
Determine the moles of KOH used in the titration: \[ \text{moles of KOH} = \text{Molarity of KOH} \times \text{Volume of KOH in liters} \].
Use the stoichiometry of the balanced equation to find the moles of citric acid: Since 3 moles of KOH react with 1 mole of citric acid, divide the moles of KOH by 3.
Calculate the molarity of the citric acid solution: \[ \text{Molarity of citric acid} = \frac{\text{moles of citric acid}}{\text{Volume of citric acid solution in liters}} \].
Convert the volume of the citric acid solution from milliliters to liters for the molarity calculation.
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Triprotic Acids
Triprotic acids, like citric acid, can donate three protons (H+) per molecule during a reaction. This characteristic affects their titration behavior, as each proton can react with a base, such as KOH, in a stepwise manner. Understanding the nature of triprotic acids is essential for calculating the total moles of acid present in a solution based on the volume and concentration of the titrant used.
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Percorso guidato
6:47
Triprotic Acid Equilibrium
Titration
Titration is a quantitative analytical technique used to determine the concentration of a solute in a solution. In this case, KOH is used to neutralize citric acid, allowing for the calculation of the acid's molarity based on the volume of titrant required to reach the endpoint. The stoichiometry of the reaction between the acid and base is crucial for accurate calculations.
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Percorso guidato
03:04Acid-Base Titration
Molarity
Molarity is a measure of concentration defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (M). To find the molarity of the citric acid solution, one must calculate the total moles of citric acid neutralized by the KOH and then divide by the volume of the acid solution in liters. This concept is fundamental in stoichiometric calculations in chemistry.
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01:13Molarity
Pratica correlata
Domanda del libro di testo
Hard water contains Ca2+, Mg2+, and Fe2+, which interfere with the action of soap and leave an insoluble coating on the insides of containers and pipes when heated. Water softeners replace these ions with Na+. Keep in mind that charge balance must be maintained. (b) If the sodium is added to the water softener in the form of NaCl, how many grams of sodium chloride are needed?
843
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Domanda del libro di testo
Citric acid, C6H8O7, is a triprotic acid. It occurs naturally in citrus fruits like lemons and has applications in food flavouring and preservatives. A solution containing an unknown concentration of the acid is titrated with KOH. It requires 23.20 mL of 0.500 M KOH solution to titrate all three acidic protons in 100.00 mL of the citric acid solution. Write a balanced net ionic equation for the neutralization reaction.
759
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Domanda del libro di testo
Suppose you have 3.00 g of powdered zinc metal, 3.00g of powdered silver metal and 500.0 mL of a 0.2 M copper(II) nitrate solution. (a) Which metal will react with the copper(II) nitrate solution?
330
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Domanda del libro di testo
(c) If 18.65 mL
of the caesium hydroxide solution was needed to neutralize a
42.3 mL aliquot of the hydroiodic acid solution, what is the
concentration (molarity) of the acid?
492
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Domanda del libro di testo
Hard water contains Ca2+, Mg2+, and Fe2+, which interfere with the action of soap and leave an insoluble coating on the insides of containers and pipes when heated. Water softeners replace these ions with Na+. Keep in mind that charge balance must be maintained. (a) If 1500 L of hard water contains 0.020 M Ca2+ and 0.0040 M Mg2+, how many moles of Na+ are needed to replace these ions?
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