What is the effect of increasing temperature on the rate of a chemical reaction according to the Arrhenius equation?
Practice Questions
1 question
Q1
What is the effect of increasing temperature on the rate of a chemical reaction according to the Arrhenius equation?
Rate decreases
Rate remains constant
Rate increases exponentially
Rate increases linearly
According to the Arrhenius equation, an increase in temperature results in an exponential increase in the rate constant, thus increasing the reaction rate.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the effect of increasing temperature on the rate of a chemical reaction according to the Arrhenius equation?
Solution: According to the Arrhenius equation, an increase in temperature results in an exponential increase in the rate constant, thus increasing the reaction rate.
Steps: 5
Step 1: Understand that the Arrhenius equation relates temperature to the rate of a chemical reaction.
Step 2: The Arrhenius equation is usually written as k = A * e^(-Ea/(RT)), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.
Step 3: Notice that as temperature (T) increases, the value of -Ea/(RT) becomes less negative, which means e^(-Ea/(RT)) increases.
Step 4: Since k (the rate constant) is directly proportional to e^(-Ea/(RT)), an increase in temperature leads to a larger value of k.
Step 5: A larger rate constant (k) means that the reaction will occur faster, thus increasing the reaction rate.
