Domanda del libro di testo
When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(III) oxide. Write the balanced chemical equation for this reaction.
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Ch.4 - Chemical Reactions and Chemical Quantities
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving117
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds128
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions84
- Ch.6 - Gases112
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements86
- Ch.10 - Chemical Bonding I: The Lewis Model91
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials48
- Ch.14 - Solutions93
- Ch.15 - Chemical Kinetics114
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases137
- Ch.18 - Aqueous Ionic Equilibrium154
- Ch.19 - Free Energy & Thermodynamics91
- Ch.20 - Electrochemistry105
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry141
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371Non è quello che usi tu?Cambia libro di testo
Capitolo 4, Problema 15
In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. What is the balanced chemical equation for this reaction?
Guida verificata passo dopo passo1
Identify the reactants and products in the reaction: solid sodium (Na), liquid water (H2O), hydrogen gas (H2), and aqueous sodium hydroxide (NaOH).
Write the unbalanced chemical equation: Na(s) + H2O(l) -> H2(g) + NaOH(aq).
Balance the equation by ensuring the number of atoms of each element is the same on both sides. Start with sodium (Na): 2 Na(s) + H2O(l) -> H2(g) + 2 NaOH(aq).
Balance the hydrogen atoms. There are 2 hydrogen atoms in H2O and 2 in H2, so adjust the water molecules: 2 Na(s) + 2 H2O(l) -> H2(g) + 2 NaOH(aq).
Finally, check the oxygen atoms. There are 2 oxygen atoms on both sides, so the equation is balanced: 2 Na(s) + 2 H2O(l) -> H2(g) + 2 NaOH(aq).
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Chemical Reactions
A chemical reaction involves the transformation of reactants into products through the breaking and forming of chemical bonds. In this case, sodium (Na) reacts with water (H2O) to produce hydrogen gas (H2) and sodium hydroxide (NaOH). Understanding the nature of reactants and products is essential for writing balanced chemical equations.
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Percorso guidato
03:31
Chemical Properties
Balancing Chemical Equations
Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, adhering to the law of conservation of mass. This involves adjusting coefficients in front of compounds to achieve equal atom counts, which is crucial for accurately representing the reaction.
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Percorso guidato
01:32Balancing Chemical Equations
Sodium Hydroxide Formation
Sodium hydroxide (NaOH) is formed when sodium reacts with water, resulting in a strong base that dissociates in solution. Recognizing the products of the reaction, including the formation of NaOH and hydrogen gas, is vital for understanding the implications of the reaction, such as its exothermic nature and the release of flammable hydrogen.
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Percorso guidato
02:34Enthalpy of Formation
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