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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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 x 10-4 mol/L-s.
Au
2 HI(g) → H2 (g) + I2 (g)
A[HI]
Rate
k =
= 1.20 × 10- mol/L · s
At
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
Transcribed Image Text: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 x 10-4 mol/L-s. Au 2 HI(g) → H2 (g) + I2 (g) A[HI] Rate k = = 1.20 × 10- mol/L · s At 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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