89.5 Arrhenius equation 9.5.1 Types of rate-temperature curves From the middle 19 century, people began to study the effect of temperature on the reaction rate ype Type ll Ty e l k qualitative Type I\ T pe9.5.1 Types of rate-temperature curves From the middle 19 century, people began to study the effect of temperature on the reaction rate. qualitative T k T k T k T k T k Type I Type II Type III Type IV: Type V §9.5 Arrhenius equation