What is the relationship between temperature and reaction rate?

Context: Chemistry
Thread starter i_love_science
Start date Mar 3, 2021
Tags

Rate Reaction Reaction rate Temperature

Click For Summary

SUMMARY

The relationship between temperature and reaction rate is quantitatively described by the Arrhenius equation, specifically ln(K2/K1) = Ea/R(1/T1 - 1/T2). In this discussion, the user is attempting to calculate the rate constant ratio K2/K1 using given temperatures T1 and T2, but lacks the activation energy (Ea). A common rule of thumb indicates that for many reactions, increasing the temperature by 10 degrees Celsius approximately doubles the reaction rate.

PREREQUISITES

Understanding of the Arrhenius equation
Knowledge of activation energy (Ea)
Familiarity with temperature scales (Celsius, Kelvin)
Basic concepts of chemical kinetics

NEXT STEPS

Research the Arrhenius equation in detail
Learn how to experimentally determine activation energy (Ea)
Explore the concept of reaction rate constants
Investigate the effects of temperature on reaction kinetics

USEFUL FOR

Chemistry students, researchers in chemical kinetics, and professionals involved in reaction rate analysis will benefit from this discussion.

Mar 3, 2021

i_love_science

Homework Statement: In general, if the temperature of a reaction is raised from 300 K to 320 K, the reaction rate will increase by a factor of approximately
A) 320 K/300 K
B) 22°C/2°C
C) 4
D) 2

Relevant Equations: Arrhenius equation

I think I should use ln(K2/K1)=Ea/R(1/T1 - 1/T2), and find K2/K1. I am given T1 and T2, but not Ea. I'm not sure how to continue.
Thanks.

(note: the answer is C)