The decomposition of in is a first-order reaction. If 1.77 mg of is present initially and 1.71 mg is present after 5.98 minutes at 55 °C, what is the value of the rate constant?
Answer:-
The reaction is first order reaction.
[A]o = 1.77 mg
[A]t = 1.71 mg
t = 5.98 min
k = 2.303/t log[A]o/[A]t
= 2.303/5.98 x log(1.77/1.71)
= 0.00577 min-1
The decomposition of in is a first-order reaction. If 1.77 mg of is present initially and...
The decomposition of N2Os in CCl is a first-order reaction. If 3.98 mg of N20s is present initially and 3.91 mg is present after 3.13 minutes at 53 °C, what is the value of the rate constant? Rate constant- min-1
The isomerization of methyisocyanide, CH2NC, to acetonitrile, CH3CN, is a first-order reaction. If 2.56 mg of CH3NC is present initially, and 1.89 mg is present after 474 min at 230 °C, what is the value of the rate constant, k? Assume the volume is constant. min-1
6) The rate constant for the first-order decomposition of N2O5 in the reaction 2N2O5(g) → 4NO2(g) + O2(g) is k=3.38 x 10-5 s-1 at 25°C. What is the half-life of N2O5? What will be the total pressure, initially 88.3 kPa for the pure N2O5 vapour, (a) 10 s, (b) 10 minutes after initiation of the reaction?
The rate constant for the first-order decomposition of a compound A in the reaction 2A rightarrow P is k = 3.6 times 10^-7 s^-1 at 25 degree C. What is the half-life of A? What will be the pressure, initially 33 kPa, at 50s, 20 min after initiation of the reaction?
The decomposition of ethane (C2H6) to methyl radicals is a first-order reaction with a rate constant of 5.36 X 10^-4 s ^-1 at 700˚C: C2H6 ---> 2CH3. Calculate the half-life of the reaction in minutes.
The first-order rate constant for the gas-phase decomposition of dimethyl ether, (CH3)20 → CH4 + H2 + CO is 3.2 x 10-4 5-1 at 450°C. The reaction is carried out in a constant-volume container. Initially, only dimethyl ether is present, and the pressure is 0.343 atm. What is the pressure of the system after 8.1 min? Assume ideal-gas behavior. 49) 0.29 x 0.44 atm
The decomposition of dinitrogen tetroxide to nitrogen dioxide at 400°C follows first-order kinetics with a rate constant of 3.75 × 10-3s-1. Starting with pure N2O4, how many minutes will it take for 37.5% to decompose? The decomposition of dinitrogen tetroxide to nitrogen dioxide at 400°C follows first-order kinetics with a rate constant of 3.75 × 10-3s-1. What is the half-life of this reaction in minutes?
In the first order reaction A---> products, [A] = 0.400 M initially and 0.250 M after 15.0 min. What is the value of the rate constant, k?
Question 6 (18 marks) (a) Given that the rate constant k for the first-order decomposition of compound X is 2.65 x 10-9 s', calculate the percentage of compound X that has decomposed in the first 2250 seconds after the reaction begins. (4 marks) (b) Consider the first order reaction: W2 → 2 Y. If [W2]=0.8 M initially and 0.17 M after 160 seconds, what will [W2] be after 350 seconds? (4 marks) (c) Data for the reaction 3A + 5B...
A decomposition reaction is first order in A. If the rate constant of the reaction is 9.03x10^-3S^-1, how long will it take for 34.1% of the material to decompose?