교과서 질문
Consider the elements Mn, Al, C, S, and Si. Which element forms the strongest π bonds?
Ch.22 - The Main Group Elements
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
22장, 문제 52
Write a balanced equation for the synthesis of hydrogen using each of the following starting materials: (b) C, (c) CH4, (d) H2O.
검증된 단계별 안내1
Step 1: Identify the reactants and products for each reaction. For (b) C, the reactants are carbon (C) and water (H2O), and the products are hydrogen gas (H2) and carbon monoxide (CO). For (c) CH4, the reactants are methane (CH4) and water (H2O), and the products are hydrogen gas (H2) and carbon monoxide (CO). For (d) H2O, the reactants are water (H2O) and a source of energy, and the products are hydrogen gas (H2) and oxygen gas (O2).
Step 2: Write the unbalanced chemical equations for each reaction. For (b) C: C + H2O → H2 + CO. For (c) CH4: CH4 + H2O → H2 + CO. For (d) H2O: H2O → H2 + O2.
Step 3: Balance the chemical equation for reaction (b) by ensuring the number of atoms of each element is the same on both sides. The balanced equation is C + H2O → H2 + CO.
Step 4: Balance the chemical equation for reaction (c) by ensuring the number of atoms of each element is the same on both sides. The balanced equation is CH4 + H2O → 3H2 + CO.
Step 5: Balance the chemical equation for reaction (d) by ensuring the number of atoms of each element is the same on both sides. The balanced equation is 2H2O → 2H2 + O2.
주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Synthesis Reactions
Synthesis reactions, also known as combination reactions, occur when two or more reactants combine to form a single product. In the context of hydrogen synthesis, various starting materials can react to produce hydrogen gas (H2). Understanding the nature of these reactions is crucial for writing balanced chemical equations.
추천 영상:
가이드 코스
01:30
Alcohol Reactions: Dehydration Reactions
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 equal numbers of each type of atom, which is a fundamental skill in chemistry.
추천 영상:
가이드 코스
01:32Balancing Chemical Equations
Types of Reactants
Different reactants can lead to the synthesis of hydrogen through various chemical pathways. For example, carbon (C) can react with water (H2O) in a gasification process, while methane (CH4) can undergo steam reforming. Recognizing the properties and reactivity of these materials is vital for predicting the products and writing accurate equations.
추천 영상:
가이드 코스
01:11Types of Aqueous Solutions