교과서 질문
Balance the following equations: (c) MnO2(s) + HCl(aq) → MnCl2(s) + H2O(l) + Cl2(g)
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Ch.3 - Chemical Reactions and Reaction Stoichiometry
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
3장, 문제 16a,b
Write balanced chemical equations to correspond to each of the following descriptions: (a) When sulfur trioxide gas reacts with water, a solution of sulfuric acid forms. (b) Boron sulfide, B2S3(s), reacts violently with water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas.
검증된 단계별 안내1
Identify the reactants and products in the chemical reaction. The reactants are boron sulfide \( \text{B}_2\text{S}_3 \) and water \( \text{H}_2\text{O} \). The products are boric acid \( \text{H}_3\text{BO}_3 \) and hydrogen sulfide gas \( \text{H}_2\text{S} \).
Write the unbalanced chemical equation using the chemical formulas: \( \text{B}_2\text{S}_3 (s) + \text{H}_2\text{O} (l) \rightarrow \text{H}_3\text{BO}_3 (aq) + \text{H}_2\text{S} (g) \).
Balance the boron atoms. There are 2 boron atoms in \( \text{B}_2\text{S}_3 \), so you need 2 \( \text{H}_3\text{BO}_3 \) molecules on the product side: \( \text{B}_2\text{S}_3 (s) + \text{H}_2\text{O} (l) \rightarrow 2\text{H}_3\text{BO}_3 (aq) + \text{H}_2\text{S} (g) \).
Balance the sulfur atoms. There are 3 sulfur atoms in \( \text{B}_2\text{S}_3 \), so you need 3 \( \text{H}_2\text{S} \) molecules on the product side: \( \text{B}_2\text{S}_3 (s) + \text{H}_2\text{O} (l) \rightarrow 2\text{H}_3\text{BO}_3 (aq) + 3\text{H}_2\text{S} (g) \).
Balance the hydrogen and oxygen atoms. You have 6 hydrogen atoms from 2 \( \text{H}_3\text{BO}_3 \) and 6 from 3 \( \text{H}_2\text{S} \), totaling 12 hydrogen atoms, requiring 6 \( \text{H}_2\text{O} \) molecules. Also, 6 oxygen atoms are needed for 2 \( \text{H}_3\text{BO}_3 \), which are provided by 6 \( \text{H}_2\text{O} \): \( \text{B}_2\text{S}_3 (s) + 6\text{H}_2\text{O} (l) \rightarrow 2\text{H}_3\text{BO}_3 (aq) + 3\text{H}_2\text{S} (g) \).
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Chemical Equations
Chemical equations represent the reactants and products in a chemical reaction using their chemical formulas. They must be balanced to obey the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Each side of the equation must have the same number of atoms for each element involved.
추천 영상:
가이드 코스
01:32
Balancing Chemical Equations
Reactivity of Boron Compounds
Boron compounds, such as boron sulfide (B2S3), can exhibit unique reactivity patterns, particularly with water. When boron sulfide reacts with water, it typically produces boric acid (H3BO3) and hydrogen sulfide (H2S). Understanding the behavior of boron compounds in reactions is crucial for predicting the products formed.
추천 영상:
가이드 코스
01:14Boron Family Reactions
Acid-Base Reactions
Acid-base reactions involve the transfer of protons (H+) between reactants. In this case, boric acid acts as a weak acid, while hydrogen sulfide can be considered a weak acid as well. Recognizing the nature of these substances helps in understanding the overall reaction and the resulting products, including their states and solubility in water.
추천 영상:
가이드 코스
01:09Acid-Base Reaction
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