I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it.
It has time taken every second (which im assuming are the different trials) and different concentrations of OH- .. also under the two concentrations they have data for Abs and ln(abs).. which again i am assuming is absolute value and the ln of absolute value but i don't know how to use this information to find the rate law. Ive only ever solved when it has Trails, data for [1], for [2], and the r initial (M/sec)
To determine the rate law of a reaction based on the given data, you can follow these steps:
1. Identify the concentrations and time taken for each trial:
- Take note of the different concentrations of OH- at each trial and the corresponding time taken. This information will be used to analyze the rate of the reaction.
2. Examine the relationship between the concentration and time:
- Plot the concentration of OH- against time and observe any trends or patterns in the data. This will give you an initial idea of how the concentration affects the reaction rate.
3. Analyze the relationship between concentration and absorbance (Abs):
- Plot the concentration of OH- against absorbance (Abs) and determine if there is a direct or inverse relationship. If there is a linear correlation, it suggests that the reaction is following a first-order rate law with respect to OH-.
4. Analyze the relationship between concentration and natural logarithm of absorbance (ln(Abs)):
- Plot the concentration of OH- against ln(Abs) and determine if there is a linear correlation. If the data forms a straight line, it indicates that the reaction is following a second-order rate law with respect to OH-.
5. Combine the information from steps 3 and 4 to determine the rate law:
- If the data from step 3 suggests a first-order relationship between concentration and Abs, and the data from step 4 suggests a second-order relationship between concentration and ln(Abs), it implies that the overall rate law is likely second order: Rate = k[OH-]^2.
- If the data from both steps 3 and 4 suggest either a first-order relationship or a second-order relationship, respectively, then the corresponding rate law can be determined.
Remember that additional data points and analysis may be necessary to confidently determine the rate law. It's important to understand the underlying principles of rate laws and kinetics to interpret the data accurately.