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Author Question: Hydrogen iodide decomposes at 800 K via a second-order process to produce hydrogen and iodine ... (Read 117 times)

asan beg

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on: Nov 18, 2019

Question 1

Nitrogen dioxide decomposes at 300 °C via a second-order process to produce nitrogen monoxide and oxygen according to the following chemical equation:

2NO2(g) → 2NO(g) + O2(g).

A sample of NO2(g) is initially placed in a 2.50 L reaction vessel at 300 °C. If the half-life and the rate constant at 300 °C are 11 seconds and 0.54 L mol-1 s-1, respectively, how many moles of NO2 were in the original sample?
◦ 0.17 mol
◦ 5.9 mol
◦ 15 mol
◦ 0.42 mol

Question 2

Hydrogen iodide decomposes at 800 K via a second-order process to produce hydrogen and iodine according to the following chemical equation:

2HI(g) → H2(g) + I2(g)

At 800 K it takes 142 seconds for the initial concentration of HI to decrease from 6.75 × 10-2 mol L-1 to 3.50 × 10-2 mol L-1. What is the rate constant for the reaction at this temperature?
◦ 9.69 × 10-2 L mol-1 s-1
◦ 1.95 × 103 L mol-1 s-1
◦ 10.3 L mol-1 s-1
◦ 5.12 × 10-4 L mol-1 s-1
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
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Marked as best answer by asan beg on Nov 18, 2019

bpool94

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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asan beg

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Reply 2 on: Nov 18, 2019
Gracias!

Viet Thy

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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