Homework Help: Chemistry

Posted by Bryan on Wednesday, September 19, 2012 at 8:22pm.

What is the value of the rate constant for a reaction in which 75.0 percent of the compound in a given sample decomposes in 80.0 min? Assume first order kinetics. Use the integrated rate law for a first order reaction. Remember at 75 percent reaction, 25 percent of the reactant is left.

Chemistry - DrBob222, Wednesday, September 19, 2012 at 9:25pm
ln(No/N) = kt
No = 100 (I assume 100; you can choose ANY convenient number for No, then N = 25% of that.)
N = 25
k = solve for this
t = 80 min.

Answer this Question

Related Questions

Chemistry - What is the value of the rate constant for a reaction in which 75.0 ...
Chemistry - In a first order decomposition reaction, 50% of a compound ...
chemistry-rate of reaction - The fictitious compound, arrhenium fluoride (AhF), ...
Chemistry - The fictitious compound, arrhenium fluoride ( ), reacts with itself...
Chemistry - The fictitious compound, arrhenium fluoride ( ), reacts with itself ...
Chemistry - Which of the following will be affected by the addition of a ...
Chemistry - The fictitious compound, arrhenium fluoride ( ), reacts with itself ...
Chemistry - A second order reaction has a rate constant of 8.7x10^-4/(M*s) at 30...
Chemistry - The fictitious compound, arrhenium fluoride (AhF), reacts with ...
Chemistry - The fictitious compound, arrhenium fluoride (AhF), reacts with ...

For Further Reading

First Name:
School Subject:
Answer: