Kinetics Practice
A scientist conducts an experiment to determine the rate of the following reaction: N2(g) + O2(g) → 2NO(g) If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of the reaction? a. 0.500 M/s d. 10.0 M/s b. 1.00 M/s e. 0.250 M/s c. 5.00 M/s
A
If the rate of appearance of O2 in the reaction: 2O3(g) → 3O2(g) is 0.250 M/s over the first 5.50 s, how much oxygen will form during this time? a. 1.38 M d. 0.25 M b. 4.13 M e. 0.46 M c. 0.69 M
A
A scientist conducts an experiment to determine the rate of NO formation in the reaction: N2(g) + O2(g) → 2NO(g) If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of NO formation? a. 0.500 M/s d. 10.0 M/s b. 1.00 M/s e. 0.250 M/s c. 5.00 M/s
B
For the reaction 2A + 3B → 4C + 5D, the rate of the reaction in terms of ΔA would be written as: a. -ΔA/Δt. d. +1/2 ΔA/Δt. b. -1/2 ΔA/Δt. e. -2 ΔA/Δt. c. +ΔA/Δt.
B
For the reaction A + 3B à 2C, how does the rate of disappearance of B compare to the rate of production of C? a. the rate of disappearance of B is 1/2 the rate of appearance of C b. the rate of disappearance of B is 3/2 the rate of appearance of C c. the rate of disappearance of B is 2/3 the rate of appearance of C d. the rate of disappearance of B is 1/3 the rate of appearance of C
B
In the combustion of methane, CH4(g) + 2 O2(g) → CO2(g) + 2 H2O (g), which reactant has the greatest rate of disappearance? a. CH4 b. O2 c. CO2 d. H2O e. CH4 and O2 have the same rate of disappearance.
B
For the reaction 2A + 3B → 4C + 5D, the rate of the reaction in terms of ΔB would be written as a. -ΔB/Δt d. +1/3 ΔB/Δt b. +ΔB/Δt e. -3 ΔB/Δt c. -1/3 ΔB/Δt
C
For the reaction 2A + 3B → 4C + 5D, the rate of the reaction in terms of ΔC would be written as a. +ΔC/Δt d. d. -4 ΔC/Δt b. +4 ΔC/Δt e. -1/4 ΔC/Δt c. +1/4 ΔC/Δt
C
HI dissociates to form I2 and H2: 2HI(g) → H2(g) + I2(g) If the concentration of HI changes at a rate of -0.45 M/s, what is the rate of appearance of I2(g)? a. 0.90 M/s d. 1.00 M/s b. 0.45 M/s e. 0.13 M/s c. 0.23 M/s
C