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Ch.11 Introduction to Organic Chemistry: Hydrocarbons
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 14th Edition
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Non è quello che usi tu?Cambia libro di testo
Capitolo 11, Problema 2b

Identify each of the following as a formula of an organic or inorganic compound. For an organic compound, indicate if represented as molecular formula, expanded, or condensed structural formula:
b. K3PO4

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1
Step 1: Understand the distinction between organic and inorganic compounds. Organic compounds primarily contain carbon atoms bonded to hydrogen, oxygen, nitrogen, or other elements, while inorganic compounds typically do not have carbon-hydrogen bonds.
Step 2: Analyze the given formula, K₃PO₄. This formula represents a compound composed of potassium (K), phosphorus (P), and oxygen (O). Notice that it does not contain carbon (C) or hydrogen (H), which are key indicators of organic compounds.
Step 3: Conclude that K₃PO₄ is an inorganic compound because it lacks carbon-hydrogen bonds and is composed of metal and nonmetal elements.
Step 4: Recognize that K₃PO₄ is written as a molecular formula, which provides the exact number of each type of atom in the compound but does not show the arrangement of atoms.
Step 5: Summarize the classification: K₃PO₄ is an inorganic compound represented as a molecular formula.

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Organic vs. Inorganic Compounds

Organic compounds primarily contain carbon and are often associated with living organisms, while inorganic compounds typically do not contain carbon-hydrogen bonds. Examples of organic compounds include hydrocarbons and alcohols, whereas inorganic compounds include salts and minerals. Understanding this distinction is crucial for classifying chemical formulas correctly.
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Chemical Formulas

Chemical formulas represent the composition of a compound. A molecular formula shows the number and type of atoms in a molecule, while expanded structural formulas depict the arrangement of atoms and bonds. Condensed structural formulas provide a simplified representation, often omitting some bonds. Recognizing these formats helps in identifying the nature of the compound.
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Phosphate Compounds

Phosphate compounds, such as K₃PO₄ (potassium phosphate), are inorganic salts containing the phosphate ion (PO₄³⁻). They are commonly used in fertilizers and have various applications in biochemistry. Identifying K₃PO₄ as an inorganic compound is essential for understanding its properties and uses in different contexts.
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