Domanda del libro di testo
How many hydrogen atoms are in each of the following: (a) C2H5OH? (b) Ca(C2H5COO)2? (c) (NH4)3PO4?
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Ch.2 - Atoms, Molecules, and Ions
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 50b
Determine the molecular and empirical formulas of the following: (b) the compound silicon tetrachloride, which has a silicon atom and four chlorine atoms and is used in the manufacture of computer chips
Guida verificata passo dopo passo1
Step 1: The molecular formula of a compound represents the actual number of atoms of each element in a molecule of the compound. In the case of silicon tetrachloride, there is one silicon atom and four chlorine atoms. Therefore, the molecular formula is SiCl4.
Step 2: The empirical formula of a compound represents the simplest whole number ratio of the atoms of each element in the compound. In the case of silicon tetrachloride, the ratio of silicon to chlorine atoms is 1:4, which is already in its simplest whole number form.
Step 3: Therefore, the empirical formula is also SiCl4. This means that the molecular and empirical formulas of silicon tetrachloride are the same.
Step 4: It's important to note that while the molecular and empirical formulas can be the same, they aren't always. For example, the molecular formula for glucose is C6H12O6, but its empirical formula is CH2O, which is the simplest whole number ratio of its atoms.
Step 5: In summary, to determine the molecular and empirical formulas, you need to know the number of atoms of each element in the compound and then express these numbers in their simplest whole number ratio for the empirical formula.
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Molecular Formula
The molecular formula of a compound indicates the actual number of each type of atom present in a molecule. For silicon tetrachloride (SiCl4), the molecular formula reflects that there is one silicon atom and four chlorine atoms, represented as SiCl4. This formula provides insight into the composition of the molecule and is essential for understanding its chemical behavior.
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Percorso guidato
02:08
Determining Molecular Formulas
Empirical Formula
The empirical formula represents the simplest whole-number ratio of the elements in a compound. For silicon tetrachloride, the empirical formula is also SiCl4, as there is no simpler ratio of silicon to chlorine in this compound. Understanding the empirical formula is important for stoichiometric calculations and determining the proportions of elements in reactions.
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Percorso guidato
02:26Empirical vs Molecular Formula
Chemical Composition
Chemical composition refers to the types and amounts of elements that make up a compound. In the case of silicon tetrachloride, the composition consists of one silicon atom and four chlorine atoms. This concept is fundamental in chemistry as it influences the properties and reactivity of the compound, particularly in applications like semiconductor manufacturing.
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Percorso guidato
04:19Matter Composition
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