The decomposition of hydrogen iodide on finely divided gold at 150°C is zero order with respect to HI. The rate defined below is constant at 1.20 × 10¬4 mol/L·s. Au 2 HI(9) Н2 (9) + 12(9) A[HI] = k = 1.20 × 10¬ª mol/L · s At Rate = - a. If the initial HI concentration was 0.500 mol/L, calculate the concentration of HI at 23 minutes after the start of the reaction. Concentration = M b. How long will it take for all of the 0.500 M HI to decompose? Time = min

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