Question 31 : What is the numerical value of the rate constant, k?
1. 20
2. 0.01
3. 100
4. 0.1
View Answer   Discuss with Members

Question 32 : Which of the following plots would be linear if the above data is plotted?
1. ln[N₂O₅] V time (in sec.)
2. ln[N₂O₅] V 1/T(K)
3. 1/[N₂O] V time (in sec.)
4. [N₂O₅] V time (in sec.)
View Answer   Discuss with Members

Question 33 : Determine the value of the rate constant, k (in sec^-1).
1. 200
2. 0.0707
3. 0.05
4. 6.93 x 10^-3
View Answer   Discuss with Members

Question 34 : The age of the Shroud of Turin in determined by radiocarbon dating. A Geiger counter measures 12 counts per minute (c.p.m.) in a sample of the shroud compared to 15.4 c.p.m. from carbon-14 in a living organism. If the half life is 5760 years, what is the age of the shroud in years? The radioactive decay of carbon-14 follows first order kinetics.
1. 5760
2. 674
3. 20 x 10^-4
4. 330
View Answer   Discuss with Members

Question 35 : What is the order with respect to A?
1. first
2. second
3. zero
4. 1
View Answer   Discuss with Members

Question 36 : The rate law consistent with the mechanism is:
1. R = k[HOI][I^-]
2. R = k[H₂O₂][I^-]₂
3. R = k[I^-]₂
4. R = k[H₂O2][I^-]
View Answer   Discuss with Members

Question 37 : The reaction intermediate is:
1. there is none
2. HOI
3. I^-
4. OH^-
View Answer   Discuss with Members

Question 38 : What is the rate constant, k (include units)?
1. 0.25 h^-1
2. 0.50 h^-1
3. 0.50 M^-1h^-1
4. 0.25 Mh^-1
View Answer   Discuss with Members

Question 39 : The half life for the first order decomposition of nitromethane, CH₃NO₂, at 500K is 650 seconds. If the initial concentration of CH₃NO₂ is 0.500M, what will its concentration be (M) after 1300 seconds have elapsed?
1. 0.14
2. 0.125
3. 0.25
4. 0.425
View Answer   Discuss with Members

Question 40 : What is the order of the reaction in HI?
1. second
2. one half
3. minus one
4. first
View Answer   Discuss with Members