Chapter 11.1, Problem 11.1PSP

For the reaction of crystal violet with NaOH(aq), the measured rate of reaction is 1.27 × 10⁻⁶ mol L⁻¹ s⁻¹ when the concentration of crystal violet cation is 4.13 × 10⁻⁵ mol/L.

1. (a) Estimate how long it will take for the concentration of crystal violet to drop from 4.30 × 10⁻⁵ mol/L to 3.96 × 10⁻⁵ mol/L.
2. (b) Could you use the same method to make an accurate estimate of how long it would take for the concentration of crystal violet to drop from 4.30 × 10⁻⁵ mol/L to 0.43 × 10⁻⁵ mol/L? Explain why or why not.