Domanda del libro di testo
Propyl acetate is the ester that gives the odor and smell of pears.
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e. How many milliliters of a 0.208 M NaOH solution is needed to completely hydrolyze (saponify) 1.58 g of propyl acetate?
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Ch.14 Carboxylic Acids, Esters, Amines, and Amides
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353
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TOC.tableOfContents
- Ch.1 Chemistry in Our Lives11
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy54
- Ch.4 Atoms and Elements51
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions41
- Ch.8 Gases29
- Ch.9 Solutions51
- Ch.10 Acids and Bases and Equilibrium65
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons78
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones83
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides90
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis83
- Ch.18 Metabolic Pathways and ATP Production67
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Non è quello che usi tu?Cambia libro di testo
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Timberlake 13th EditionCh.14 Carboxylic Acids, Esters, Amines, and AmidesProblema 79d
Timberlake 13th EditionCh.14 Carboxylic Acids, Esters, Amines, and AmidesProblema 79dCapitolo 14, Problema 79d
Propyl acetate is the ester that gives the odor and smell of pears.
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d. Write the balanced chemical equation for the base hydrolysis of propyl acetate with NaOH.
Guida verificata passo dopo passo1
Identify the reactants: Propyl acetate (C3H7COOCH3) and sodium hydroxide (NaOH). Base hydrolysis of an ester involves breaking the ester bond in the presence of a strong base like NaOH.
Understand the reaction mechanism: In base hydrolysis (saponification), the ester reacts with the hydroxide ion (OH⁻) from NaOH. This breaks the ester bond, forming a carboxylate salt and an alcohol.
Write the general reaction format: RCOOR' + NaOH → RCOONa + R'OH. Here, R is the propyl group (C3H7), and R' is the methyl group (CH3).
Substitute the specific groups into the general reaction: C3H7COOCH3 + NaOH → C3H7COONa + CH3OH.
Verify the equation is balanced: Ensure the number of each type of atom is the same on both sides of the equation. In this case, the equation is already balanced as written.
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Ester Hydrolysis
Ester hydrolysis is a chemical reaction where an ester reacts with water to form an alcohol and a carboxylic acid. In the case of propyl acetate, hydrolysis involves breaking the ester bond in the presence of water, leading to the formation of propanol and acetic acid. This reaction can occur under acidic or basic conditions, with base hydrolysis often referred to as saponification.
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Acid-Catalyzed Ester Hydrolysis Concept 1
Balanced Chemical Equation
A balanced chemical equation represents a chemical reaction with equal numbers of each type of atom on both sides of the equation. Balancing is essential to obey the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. For the hydrolysis of propyl acetate, the equation must reflect the reactants (propyl acetate and sodium hydroxide) and the products (propanol and acetic acid) in stoichiometric proportions.
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Saponification Reaction
Saponification is a specific type of ester hydrolysis that occurs in the presence of a strong base, such as sodium hydroxide (NaOH). This reaction is commonly associated with the production of soap from fats and oils, but it also applies to esters like propyl acetate. During saponification, the ester is converted into an alcohol and a carboxylate salt, which is the basis for soap formation.
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Propyl acetate is the ester that gives the odor and smell of pears.
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a. Draw the condensed structural formula for propyl acetate.
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Domanda del libro di testo
Ethyl octanoate is a flavor component of mangoes.
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e. How many milliliters of a 0.315 M NaOH solution is needed to completely hydrolyze (saponify) 2.84 g of ethyl octanoate?
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Domanda del libro di testo
Draw the line-angle formula and write the IUPAC name for each of the following:
a. A carboxylic acid that has the formula C6H12O2, with no substituents
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Ethyl octanoate is a flavor component of mangoes.
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c. Write the balanced chemical equation for the acid hydrolysis of ethyl octanoate.
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Domanda del libro di testo
Propyl acetate is the ester that gives the odor and smell of pears.
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b. Write the balanced chemical equation for the formation of propyl acetate.
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