Multiple Choice
Hydrogen iodide decomposes at 800 K via a second-order process to produce hydrogen and iodine according to the following chemical equation. 2 HI(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 M to 3.50 × 10-2 M.What is the rate constant for the reaction at this temperature?
A) 5.12 × 10-4 M-1s-1
B) 9.69 × 10-2 M-1s-1
C) 10.3 M-1s-1
D) 1.95 × 103 M-1s-1
Correct Answer:

Verified
Correct Answer:
Verified
Q159: When the temperature of a gas whose
Q160: The following reaction is first order,C<sub>2</sub>H<sub>6</sub> →
Q161: The following reaction is first order: C<sub>2</sub>H<sub>6</sub>
Q162: When the concentration of A is doubled,the
Q163: The isomerization reaction,CH<sub>3</sub>NC → CH<sub>3</sub>CN,is first order
Q165: What fraction of collisions will have sufficient
Q166: Which general rate law below corresponds to
Q167: Nitrogen dioxide decomposes at 300°C via a
Q168: A reaction has the rate law Rate
Q169: The fraction of collisions with sufficient energy