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: At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00285 s-1: 2Cl2O5 (g) → 2Cl2 (g) + 5O2 (g) Suppose a vessel contains Cl2O5 at a concentration of 0.640 M.

Solution: At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00285 s-1: 2Cl2O5 (g) → 2Cl2 (g) + 5O2 (g) Suppose a vessel contains Cl2O5 at a concentration of 0.640 M.

Problem

At a certain temperature this reaction follows first-order kinetics with a rate constant of 0.00285 s-1

2Cl2O5 (g) → 2Cl2 (g) + 5O2 (g) 

Suppose a vessel contains Cl2O5 at a concentration of 0.640 M. Calculate the concentration of Cl2O5 in the vessel 280. seconds later. You may assume no other reaction is important. 

Round your answer to 2 significant digits.