For the reaction, A ? B + C, the rate law is rate = k[A]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant? 0.00450 s?¹ 0.0290 s?¹ 0.00530 s?¹ 5.40 s?¹ 0.0150 s?¹
Added by Aki S.
Close
Step 1
Given: Remaining concentration of A = 30% Initial concentration of A = 100% Ratio = Remaining concentration / Initial concentration Ratio = 30 / 100 Ratio = 0.3 ** Show more…
Show all steps
Your feedback will help us improve your experience
Supreeta N and 96 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
For the reaction $A \longrightarrow$ products, the following data give $[\mathrm{A}]$ as a function of time $t=0 \mathrm{s},[\mathrm{A}]=0.600 \mathrm{M};100 \mathrm{s}, 0.497 \mathrm{M} ; 200 \mathrm{s}, 0.413 \mathrm{M} ; 300 \mathrm{s}, 0.344 \mathrm{M} ; 400 \mathrm{s}$ $0.285 \mathrm{M} ; 600 \mathrm{s}, 0.198 \mathrm{M} ; 1000 \mathrm{s}, 0.094 \mathrm{M}.$ (a) Show that the reaction is first order. (b) What is the value of the rate constant, $k ?$ (c) What is $[\mathrm{A}]$ at $t=750 \mathrm{s} ?$
For the reaction $A \longrightarrow$ products, the following data give $[\mathrm{A}]$ as a function of time: $t=0 \mathrm{s},[\mathrm{A}]=0.600 \mathrm{M}$ $100 \mathrm{s}, 0.497 \mathrm{M} ; 200 \mathrm{s}, 0.413 \mathrm{M} ; 300 \mathrm{s}, 0.344 \mathrm{M} ; 400 \mathrm{s}$ $0.285 \mathrm{M} ; 600 \mathrm{s}, 0.198 \mathrm{M} ; 1000 \mathrm{s}, 0.094 \mathrm{M}.$ (a) Show that the reaction is first order. (b) What is the value of the rate constant, $k ?$ (c) What is $[\mathrm{A}]$ at $t=750 \mathrm{s} ?$
A certain reaction has the following rate law: Rate = k[A]^0[B]^2[C]. What is the numerical value of the specific rate constant, k, if the initial rate of the reaction is 0.070 M/s when [A]^0 = 0.350 M, [B]^0 = 0.700 M, [C]^0 = 0.450 M?
Madhur L.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD