Hydrogen iodide decomposes slowly to H2 and I2 at 600 K. The reaction is second order in HI and the rate constant is 9.7×10-6M-1s-1.
i) What is the half-life (in days) of this reaction when the initial HI concentration is 0.100 M?
ii) How many days does it take for the concentration of HI to drop from 0.200 M to 5.00×10-2 M?