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 Br2 is followed as a function of time; two different plots of the data are shown here.The figure shows natural logarithm of the decomposition of Br2 as a function of time. The decomposition is measured from minus 2.5 to 0 on the y-axis and time is measured from 0 to 80 seconds on the x-axis. The curve is a straight line and goes down from 0 units of decomposition at 0 seconds to minus 2.25 units of decomposition at 75 seconds. The figure shows the 1 divided by the concentration of Br2 as a function of time. The reverse concentration is measured from 0 to 10 units on the y-axis and time is measured from 0 to 80 seconds on the x-axis. The curve starts at 1 unit of reverse concentration at 0 seconds and grows exponentially. Some of its points are: 2 units at 25 seconds, 4 units at 45 seconds, and 9.5 units at 73 seconds.Determine the order and rate constant for the reaction.

Solution: The decomposition of Br2 is followed as a function of time; two different plots of the data are shown here. Determine the order and rate constant for the reaction.

Problem

The decomposition of Br2 is followed as a function of time; two different plots of the data are shown here.

The figure shows natural logarithm of the decomposition of Br2 as a function of time. The decomposition is measured from minus 2.5 to 0 on the y-axis and time is measured from 0 to 80 seconds on the x-axis. The curve is a straight line and goes down from 0 units of decomposition at 0 seconds to minus 2.25 units of decomposition at 75 seconds. The figure shows the 1 divided by the concentration of Br2 as a function of time. The reverse concentration is measured from 0 to 10 units on the y-axis and time is measured from 0 to 80 seconds on the x-axis. The curve starts at 1 unit of reverse concentration at 0 seconds and grows exponentially. Some of its points are: 2 units at 25 seconds, 4 units at 45 seconds, and 9.5 units at 73 seconds.

Determine the order and rate constant for the reaction.