What is the effect of temperature on the rate of a chemical reaction according t

Practice Questions

Q1
What is the effect of temperature on the rate of a chemical reaction according to the Arrhenius equation?
  1. Rate decreases exponentially with temperature
  2. Rate increases linearly with temperature
  3. Rate increases exponentially with temperature
  4. Rate remains constant regardless of temperature

Questions & Step-by-Step Solutions

What is the effect of temperature on the rate of a chemical reaction according to the Arrhenius equation?
  • 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 the 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 an increase in k.
  • Step 5: A higher rate constant (k) means that the reaction will occur faster, resulting in a higher reaction rate.
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