2. Determining Reaction Rate and Order of Reaction An example of Using the Excel Solver function by: Vanadium Sigma

3. Determining Reaction Rate Common chemical engineering task Work performed in a batch reactor Samples drawn off at set time points Samples analyzed for concentration data General form: ra = kCa (alpha)

4. Example: Background You are an engineer making product P from a reaction: A P You know the reaction is not first order Your intern has collected data from a batch reaction Time (s)Ca (mM) 050 38 10030.6 15025.6 20022.2 25019.5 30017.4

5. Example: Setup

6. Example: Solver

8. Example: Solution

9. Summary Determining reaction rate is important to model chemical reactions Excel solver can be used to accurately model the reaction rate for a simple reaction engineering problem The sum of squared residuals between experimental and model data was minimized