Final answer:
The instantaneous reaction rate of a pseudo first-order reaction can be calculated using the rate constant. In this case, the rate constant (k') is given as 0.12 s-1. To calculate the instantaneous reaction rate at 3 seconds, we can use the formula: Rate = k' * [Bleach]. Similarly, to calculate the instantaneous reaction rate at 9 seconds, we can substitute t = 9 seconds in the formula.
Step-by-step explanation:
The instantaneous reaction rate of a pseudo first-order reaction can be calculated using the rate constant. In this case, the rate constant (k') is given as 0.12 s-1. To calculate the instantaneous reaction rate at 3 seconds, we can use the formula:
Rate = k' * [Bleach]
Substituting the given values, Rate (at 3 seconds) = 0.12 s-1 * [Bleach]
Similarly, to calculate the instantaneous reaction rate at 9 seconds, we can substitute t = 9 seconds in the formula.