Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Aspirin (acetylsalicylic acid, C9H8O4) is made by reacting salicylic acid (C 7H6O3) with acetic anhydride [(CH3CO)2O]: C7H6O3(s) + (CH3CO)2O(l) ⟶C9H8O4(s) + CH3COOH(l) In one preparation, 3.077 g of s

Solution: Aspirin (acetylsalicylic acid, C9H8O4) is made by reacting salicylic acid (C 7H6O3) with acetic anhydride [(CH3CO)2O]: C7H6O3(s) + (CH3CO)2O(l) ⟶C9H8O4(s) + CH3COOH(l) In one preparation, 3.077 g of s

Problem

Aspirin (acetylsalicylic acid, C9H8O4) is made by reacting salicylic acid (C 7H6O3) with acetic anhydride [(CH3CO)2O]: C7H6O3(s) + (CH3CO)2O(l) ⟶C9H8O4(s) + CH3COOH(l) In one preparation, 3.077 g of salicylic acid and 5.50 mL of acetic anhydride react to form 3.281 g of aspirin. 

(a) Which is the limiting reactant (the density of acetic anhydride is 1.080 g/mL)?

Solution

First, we need to make sure we have both mass values of the reactant.

The mass of C 7H6Ois already given so we only need to calculate the mass of  (CH3CO)2O using the volume and density given:

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