Domanda del libro di testo
(a) By titration, 15.0 mL of 0.1008 M sodium hydroxide is needed to neutralize a 0.2053-g sample of a weak acid. What is the molar mass of the acid if it is monoprotic?
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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 105b
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?
Guida verificata passo dopo passo1
Identify the possible reactions: Zinc and silver metals can react with copper(II) nitrate solution. However, silver is less reactive than copper, so it will not displace copper from its compound. Zinc, being more reactive, can displace copper from copper(II) nitrate.
Write the balanced chemical equation for the reaction between zinc and copper(II) nitrate: \( \text{Zn(s)} + \text{Cu(NO}_3\text{)}_2\text{(aq)} \rightarrow \text{Cu(s)} + \text{Zn(NO}_3\text{)}_2\text{(aq)} \).
Identify the ions present in the solution: Copper(II) nitrate dissociates into \( \text{Cu}^{2+} \) and \( \text{NO}_3^- \) ions in solution.
Determine the net ionic equation: The net ionic equation includes only the species that undergo a change. Zinc metal reacts with copper ions, so the net ionic equation is \( \text{Zn(s)} + \text{Cu}^{2+}\text{(aq)} \rightarrow \text{Cu(s)} + \text{Zn}^{2+}\text{(aq)} \).
Verify the charge and mass balance: Ensure that the number of atoms and the total charge are balanced on both sides of the net ionic equation.
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Net Ionic Equations
A net ionic equation represents the actual chemical species that participate in a reaction, omitting spectator ions that do not change during the reaction. It focuses on the ions and molecules that undergo a chemical change, providing a clearer picture of the reaction's essence. This is particularly useful in reactions involving soluble ionic compounds in aqueous solutions.
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Percorso guidato
00:51
Net Ionic Equations
Oxidation-Reduction Reactions
Oxidation-reduction (redox) reactions involve the transfer of electrons between species, leading to changes in oxidation states. In this context, zinc is oxidized (loses electrons) while copper ions are reduced (gain electrons). Understanding the roles of oxidizing and reducing agents is crucial for writing the correct net ionic equation for the reaction.
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01:53Oxidation and Reduction Reactions
Solubility Rules
Solubility rules help predict whether a compound will dissolve in water, which is essential for determining the reactants and products in aqueous reactions. For instance, copper(II) nitrate is soluble, while silver may form an insoluble compound with certain anions. Knowing these rules aids in identifying which ions remain in solution and which precipitate out during the reaction.
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00:28Solubility Rules
Pratica correlata
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. Calculate the molarity of the citric acid solution.
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Domanda del libro di testo
(b) An elemental analysis of the acid indicates that it is composed of 5.89% H, 70.6% C, and 23.5% O by mass. What is its molecular formula?
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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?
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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?
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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. (d) What is the molarity of Cu2+ ions in the resulting solution?
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