Ch.13 - Chemical KineticsWorksheetSee 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: The decomposition of urea (NH 2CONH2), an end product in protein metabolism, occurs according to the following reaction:  NH2CONH2 (aq) + H+ (aq) + 2H 2O (l) → 2NH 4 + (aq) + HCO3– (aq) The rate of

Problem

The decomposition of urea (NH 2CONH2), an end product in protein metabolism, occurs according to the following reaction: 

NH2CONH2 (aq) + H+ (aq) + 2H 2O (l) → 2NH 4 + (aq) + HCO3 (aq)

The rate of decomposition only depends on the concentration of urea, and the rate constant for the decomposition is 4.28 x 10-4 s-1 at 25 oC.

a. What is the order of the decomposition reaction? How can you tell?

 

b. What is the concentration of urea in this solution after 2 minutes if the starting concentration is 0.500 M?