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 first-order reaction SO2Cl2 → SO2 + Cl2 is 10% complete in 80 min. How long would it take for the reaction to be 95% complete? (a) 1.8 min (b) 104 min (c) 530 min (d) 2300 min (e) 990 min

Solution: The first-order reaction SO2Cl2 → SO2 + Cl2 is 10% complete in 80 min. How long would it take for the reaction to be 95% complete? (a) 1.8 min (b) 104 min (c) 530 min (d) 2300 min (e) 990 min

Problem

The first-order reaction SO2Cl2 → SO2 + Cl2 is 10% complete in 80 min. How long would it take for the reaction to be 95% complete? 

(a) 1.8 min 

(b) 104 min 

(c) 530 min 

(d) 2300 min 

(e) 990 min


Solution

We’re given the following first order reaction:

SO2Cl2  SO2 + Cl2


The integrated rate law for a first order reaction is as follows:



where:

[A]t = concentration at time t 

k = rate constant

t = time, [A]0 = initial concentration


We’re being asked to determine the time it would take for the reaction to be 95% completeSince no concentration is given, we can use the given percentages in place of concentration.


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