Ch.22 - Chemistry of the Nonmetals
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
22장, 문제 24
Complete the exercises below. Write balanced equations for each of the following reactions: a. Aluminum metal reacts with acids to form hydrogen gas. b. Steam reacts with magnesium metal to give magnesium oxide and hydrogen. c. Manganese(IV) oxide is reduced to manganese(II) oxide by hydrogen gas. d. Calcium hydride reacts with water to generate hydrogen gas.
검증된 단계별 안내1
Identify the reactants and products for each reaction. For example, in reaction (a), the reactants are aluminum metal and an acid, and the products are hydrogen gas and a salt formed from the acid.
Write the unbalanced chemical equation for each reaction. For reaction (a), it would be: \( \text{Al} + \text{HCl} \rightarrow \text{AlCl}_3 + \text{H}_2 \).
Balance the chemical equation by adjusting the coefficients to ensure the same number of each type of atom on both sides of the equation. For reaction (a), balance the aluminum, chlorine, and hydrogen atoms.
Repeat the process for each subsequent reaction, ensuring to write the unbalanced equation first, then balance it. For example, for reaction (b), start with \( \text{Mg} + \text{H}_2\text{O} \rightarrow \text{MgO} + \text{H}_2 \).
Check each balanced equation to ensure mass and charge are conserved, meaning the number of atoms and the total charge are the same on both sides of the equation.
주요 개념
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Balancing Chemical Equations
Balancing chemical equations is essential to ensure that the law of conservation of mass is upheld, meaning the number of atoms of each element must be the same on both sides of the equation. This involves adjusting coefficients in front of compounds to achieve balance, reflecting the stoichiometry of the reaction.
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가이드 코스
01:32
Balancing Chemical Equations
Types of Chemical Reactions
Understanding the types of chemical reactions, such as single displacement, double displacement, synthesis, and decomposition, is crucial for predicting the products of reactions. For example, reactions involving metals and acids typically result in hydrogen gas and a salt, while metal oxides can be formed through reactions with steam.
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가이드 코스
02:25Common Types of Alkane Reactions
Redox Reactions
Redox (reduction-oxidation) reactions involve the transfer of electrons between substances, leading to changes in oxidation states. In the context of the question, recognizing which species are oxidized and reduced is vital, such as manganese(IV) oxide being reduced to manganese(II) oxide by hydrogen gas, indicating a gain of electrons.
추천 영상:
가이드 코스
03:12Identifying Redox Reactions
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