교과서 질문
Which of the following compounds contain ionic bonds? Which contain covalent bonds? Which contain coordinate covalent bonds? (A compound may contain more than one type of bond.)
a. BaCl2
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Ch.4 Molecular Compounds
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187당신이 사용하는 게 아니라요?교과서 변경
4장, 문제 93
The sulfite ion (SO32–) and sulfur trioxide (SO3) have the same chemical formulas but different molecular geometries. Draw the Lewis dot structures and identify the molecular geometry of each.
검증된 단계별 안내1
Step 1: Begin by determining the total number of valence electrons for each species. For the sulfite ion (SO₃²⁻), sulfur contributes 6 electrons, each oxygen contributes 6 electrons, and the ion has an additional 2 electrons due to its charge. For sulfur trioxide (SO₃), sulfur contributes 6 electrons, and each oxygen contributes 6 electrons, with no extra electrons from charge.
Step 2: Draw the Lewis dot structure for the sulfite ion (SO₃²⁻). Place sulfur in the center as the least electronegative atom, and arrange the three oxygen atoms around it. Distribute the valence electrons to satisfy the octet rule for each atom, keeping in mind the extra 2 electrons from the charge. Include resonance structures if applicable.
Step 3: Draw the Lewis dot structure for sulfur trioxide (SO₃). Place sulfur in the center and arrange the three oxygen atoms around it. Distribute the valence electrons to satisfy the octet rule for each atom. Note that sulfur can expand its octet due to its position in Period 3 of the periodic table. Include resonance structures if applicable.
Step 4: Identify the molecular geometry of the sulfite ion (SO₃²⁻) using VSEPR theory. Count the regions of electron density (bonding pairs and lone pairs) around the central sulfur atom. The presence of lone pairs will affect the geometry, resulting in a trigonal pyramidal shape.
Step 5: Identify the molecular geometry of sulfur trioxide (SO₃) using VSEPR theory. Count the regions of electron density around the central sulfur atom. Since there are no lone pairs on sulfur, the geometry will be trigonal planar.
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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
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주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Lewis Dot Structures
Lewis dot structures are diagrams that represent the valence electrons of atoms within a molecule. They illustrate how electrons are shared or transferred between atoms, helping to visualize bonding and lone pairs. For the sulfite ion (SO₃²⁻) and sulfur trioxide (SO₃), drawing their Lewis structures will reveal the arrangement of electrons and the connectivity of atoms.
추천 영상:
가이드 코스
03:11
Lewis Dot Structures: Ions (Simplified) Concept 1
Molecular Geometry
Molecular geometry refers to the three-dimensional arrangement of atoms in a molecule. It is determined by the number of bonding pairs and lone pairs of electrons around the central atom, which influences the shape of the molecule. Understanding the molecular geometry of SO₃²⁻ and SO₃ is crucial for predicting their chemical behavior and reactivity.
추천 영상:
가이드 코스
01:30Molecular Geometry (Simplified) Concept 1
VSEPR Theory
Valence Shell Electron Pair Repulsion (VSEPR) theory is a model used to predict the geometry of molecules based on the repulsion between electron pairs. According to VSEPR, electron pairs will arrange themselves to minimize repulsion, leading to specific molecular shapes. This theory is essential for determining the molecular geometries of SO₃²⁻ and SO₃ after constructing their Lewis dot structures.
추천 영상:
가이드 코스
05:22Atomic Theory
관련 실천
교과서 질문
Which of the following elements would you expect to form (iv) both covalent and ionic bonds? (More than one answer may apply; remember that some nonmetals can form ionic bonds with metals.) Explain your answers.
a. Oxygen
b. Potassium
c. Phosphorus
d. Iodine
e. Hydrogen
f. Cesium
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교과서 질문
The phosphonium ion, PH4+ is formed by reaction of phosphine, PH3, with an acid.
d. Explain why the ion has a +1 charge.
2898
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교과서 질문
The phosphonium ion, PH4+ is formed by reaction of phosphine, PH3, with an acid.
b. Predict its molecular geometry.
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