The gas phase decomposition of hydrogen iodide at 700 K
HI(g)½ H2(g) + ½ I2(g)
is second order in HI.
In one experiment, when the initial concentration of HI was 2.00 M, the concentration of HI dropped to 0.434 M after 1.10×103 seconds had passed.
Based on these data, the rate constant for the reaction is________ M-1 s-1.