The half-life of a first-order reaction was found to be439 s; what is the rate constant for the reaction?

Q: The rate constant for the decomposition of H202 was determined to be 2.89×10¬2 s1. How long will it…

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Q: Define half-life of a reaction. Write the expression of half-life for(i) zero order reaction and…

A: Half life of any reaction is defined as the time required for the reactant to become half of it's…

Q: The enzyme urease catalyses the reaction in which urea is hydrolysed to ammonia and carbon dioxide.…

A: GIVEN: The half-life of urea in the pseudofirst-order reaction. temperature is lowered from 20 oC to…

Q: The desorption (leaving of the surface) of a single molecular layer of n-butane from a single…

A: In order to calculate the required answers we first write down the given data: Rate constant= 0.128…

Q: If the half-life period of a first order reaction in A is 2 minutes, how long will it take [A] to…

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Q: The half-life of a first-order reaction is found to be 28.25 min. a. What is the value of the rate…

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Q: How many half-lives are required to reduce the concentration of a first order reaction to 6.25% of…

A: Half life means (initial concentration /2) means 50% of initial concentration will be remained after…

Q: How many half-lives are required for a first-order reaction toreach 799% completion?

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Q: Radioactive decay is a first-order kinetic process. The half-life for the decay of plutonium-239 is…

A: Radioactive decay always follows first order kinetic process , so we have to use the formulas of…

Q: Summarize the difference in the behavior of half-lives for first order vs. second-order reactions.

A: A half-life is calculated from the direct measurement concentration after it reduces to half of its…

Q: Write integrated rate laws for zero-order, first-order, andsecond-order reactions of the form A ¡…

A: The integrated rate law expression for 1st, 2nd, and 0 order reaction is as follows,

Q: At 518 °C, the half-life for the decomposition of a sample of gaseous ethanal (acetaldehyde)…

A: In chemical kinetics rate of reaction and its variation with any factors is studied. Various factors…

Q: Match the half-life to the rate constant assuming that the initial conce k = 0.5 M/s k = 0.5/ (M s)…

A: A) k = 0.5 M/s From the unit of rate constant, it is zero order reaction.  half life = Ao/2k   =…

Q: The rate constant for the breakdown of an isotope of iodine is first order and has a half-life of…

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Q: Show that the time constant of a first order reaction is the reciprocal of the rate constant

A: In a first order reaction, the rate of the reaction depends on the first order of the concentration…

Q: The half-life for the second-order decomposition reaction of 0.200 M HI to form H2 and I2 is…

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Q: Under what conditions is the reaction most likely to be pseudo-first order?

A: Pseudo first-order reaction is the type of reaction that appears to be a second-order reaction but…

Q: Based on these data, the rate constant for the reaction is M's!

A: Step : 1  Calculate the rate constant for the reaction.

Q: Derive an expression for the t½ (half-life time) for a 1st order reaction, starting with the…

A: First Order Reaction:- A ----> P Rate,r = -d[A] / dt Integrated rate law:- -d[A] / dt = k[A]…

Q: A reaction is 50% complete in 44.9 minutes. How long after the start of the reaction will it be 75%…

A: For the zero order reaction rate = k that is rate constant. Zero order reaction is independent of…

Q: Define the molecularity of a reaction and explain how and when this is linked to the reaction…

A: Molecularity: The molecularity of a reaction is described as the number of reacting molecules that…

Q: The half-life for the decay of radium is 1620 years. What is the rate constant for this first-order…

A: The half-life of a reaction, t1/2, is defined as the amount of time required for a reactant…

Q: What is the first-order rate constant for its decay?

A: Relationship between t1/2 and k in first order reaction :-  t1/2 = ln 2/k  Or  t1/2 = 0.693/k  k is…

Q: A certain first order reaction is 60.5% complete in 60 minutes at 310K. What is its rate constant?

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Q: A certain first-order reaction is 45.0% complete in 65 s. Determine: (a) the rate constant and (b)…

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Q: The equilibrium constant for the binding of a drug molecule to a protein was measured as 200. In a…

A: Given data. Equilibrium constant = 200 (k1) = 1.5×108 dm3mol-1s-1 Rate constant for the binding…

Q: The half-life of a first-order process a. Depends on the reactant concentration raised to the first…

A: The time required for decreases the concentration of reactant species by half  when compared to the…

Q: A reaction of the form aA → Products is second order with a half-life of 441 s. What is the rate…

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Q: The half-life for the second-order decomposition reaction of 0.200 M HI to form H2 and I2 is…

A: Given: The Initial concentration(A0) of HI=0.200 M The half-life(t1/2) of the decomposition of…

Q: A biochemist studying breakdown of the insecticide DDT finds that it decomposes by a first-order…

A: DDT is the short form of dichlorodiphenyltrichloroethane. It is an organochlorine compound which was…

Q: The units of the rate constant depend on the order of the reaction.

A: A + B -------> products  According to the rate law :-  Rate = k[A]a[B]b  Where k is the rate…

Q: The decomposition of N2O2 is an important process in tropospheric chemistry. The half-life for is…

A: When a reaction follows first order rate law, integrated  rate equation is Nt=Noe0.693×tt12whereNt =…

Q: the rate constant k for a first order reaction is what?

A: Rate Constant k for a First order reaction: Consider the reaction,

Q: Given a set of reaction conditions, predict whether a reaction will be unimolecular or bimolecular,…

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Q: Give a mathematical expression for the half-life of a first order reaction and of a second order…

A: Half life period of a reaction is the time in which half of concentration of Reactants consumed. It…

Q: The half-life for the zero order reaction A → Products is 276 s. What is the value of the rate…

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Q: For a first-order parallel reaction, the Arrhenius factor for formation of two products are 20000…

A: Answer: This question is based on Arrhenius equation which is shown below: k=Ae-EaRT Here: k=rate…

Q: What are the orders of reaction with respect to [A] and [B] and rate constant k?

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Q: A reaction is of second order with respect to a reactant. How is the rate of reaction affected if…

A: Rate law gives the relation between rate of the reaction and the concentration of the reactants.

Q: (i) If half life period of first order reaction is x and 3/4 th life period of same reaction is ’y’,…

A: i) The half-life of a reaction is defined at the time during which the concentration of the reactant…

Q: Distinguish between a) an elementary reaction and the overall reaction b) molecularity and reaction…

A: Ghus question is based on the difference of them, a)An elementary reaction and the overall reaction…

Q: The gas-phase decomposition of SO2Cl2 , SO2Cl2(g)→SO2(g)+Cl2(g), is first order in SO2Cl2 . At 600 K…

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Q: Write the expressions for the half-lives of zero-order, first-order, and second-order reactions.

A: Half-life: The half-life of a chemical reaction is the time needed for half of an initial…

Q: Half-life for a first order reaction 693 s. Calculate the time required for 90% completion of this…

A: When concentration of a reactant decreases to one-half of its initial value then the time required…