Define Half-Life of a First-Order Reaction:

Q: Decay of a pollutant is a 1st order reaction with a half-life of 55 days. How many days are needed…

A: If initial concentaration= 100 Final concentration= 100-90=10

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

A: First order reactions are the reactions in which rate of the reaction is dependent on concentration…

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: What is the half-life of a first-order reaction with a rate constant of 7.40×10−4  s−1?

A: Given that,  Rate constant for a first order reaction K = 7.40×10-4 s-1 half life time period for…

Q: Chemistry. In the subject of " Order of Reaction ". Differentiate zero, first, and second-order…

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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: Calculate the half-life of a first-order reaction if 66% of the reactants are reacted within 66 s.

A: Given- Reaction is first order reaction assume reactant is 100% Reactant reacted =66% Reactant…

Q: The rate constant for a particular second-order reaction is 0.47 /(M×s). If the initial…

A: The speed, via which dissociation of reactants and formation of products occurs, is known as the…

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: 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: A certain medication contains 200 mg of active ingredient per tablet. The medication is metabolized…

A: Initial Amount = 200 mg  According to question 150 mg has been metabolised in the body &…

Q: What is a second-order reaction?

A: A second-order reaction has to be given.

Q: What is the best way to ascertain that a reaction is first order?

A: if it the reaction is a first-order reaction, plot the natural logarithm of a reactant concentration…

Q: A second-order reaction has a half-life of 12 s when the initial concentration of reactant is 0.98…

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Q: What is the halflife of a compound if /5 percent of a given sample of the compound decomposes in 60…

A: Given a compound follows first order kinetics.5 % of the given sample of the compound decomposes in…

Q: After a certain pesticide compound is applied to crops, its decomposition is a first-order reaction…

A: Half life :-  The time required for half of reactants to convert into products is called half life…

Q: A certain reaction follows a 3rd order reaction. In an experiment, starting with 100 ppm, it was…

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Q: Does the half-life of a zero-order reaction depend on the initial concentration of the reactant?

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Q: A certain first-order reaction has a rate constant of 0.00710 1/min at 300 K. What is the half-life…

A: The relationship between rate constant and half life for first order reaction is -  Half life,…

Q: he half-life, t2, of a chemical reaction is proportional to the initial concentration of the…

A: Half Life (t1/2):

Q: The half-life for a first-order reaction, A→B is 9.79 s. If the initial [A] is 0.75 M, how long…

A: This question is related chemical kinetics. First contain all the given information. Then apply the…

Q: How to Determine First-order Reaction?

A: The chemical reactions in which the rate of reaction is straightly proportional to the concentration…

Q: The initial concentration of a reactant in a first order reaction is 0.860 M. What will be its…

A: The rate of the reaction is referred to as the change in the molar concentration in the distinct…

Q: , the half-life of a first-order reaction

A: The half-life of a reaction is the time required for the reactant concentration to decrease to…

Q: The half-life of a first-order reaction does not depend on the initial concentration of reactant.

A: A ------ > product   For first order reaction, rate law expression is,  Rate = k[A]

Q: A first-order chemical reaction is observed to have a rate constant of 24 min-1. What is the…

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Q: A drug solution decomposes via first-order kinetics with a rate constant, k, of 0.0077 days-1. What…

A: The given condition is 1st order we know for  1st order , t1/2= 0.693/K 1

Q: If a solution containing 14.0 gg of a substance reacts by first-order kinetics, how many grams…

A: Half-life period is the time required for the reactant (substrate) concentration to reduce to the…

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: Age of a tree/fossils can be measured by looking at the remaining Carbon-14 in a sample. C-14 has a…

A: Half life of C-14 = 5720 years As the reaction follow first order kinetics., Rate constant, K =…

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: Define the half-lifeof a reaction. Explain on the molecu-lar level why the half-life of a…

A: Half-life: The time required for the concentration of a reactant to decrease to one half of its…

Q: A first order reaction has a half life of 33 s. How long will it take for the reactant concentration…

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Q: The decomposition of radioactive iodine is a first-order process with a half-life of 8 days. If the…

A: Half-life is the time required for the reaction to be half completed. It is denoted by t1/2 . For a…

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: For the first order reaction, the initial concentration of A= .4 M. What is the half life of the…

A: when the rate of the reaction depends only on the concentration of the reactant and its power is one…

Q: Define the following terms :(a) Pseudo first order reaction.(b) Half life period of reaction (t1/2).

A: (a) Pseudo first order reaction is the type of reaction for which the order and molecularity are not…

Q: The rate constant for a first-order reaction is 0.77 s^-1. What is the half-life of this reaction if…

A: The following  equation can be used to calculate the half-life of a first-order reaction. t12=ln…

Q: Define the following terms:(i) Pseudo first order reaction(ii) Half life period of reaction (t1/2)

A: (i) Pseudo first order reaction : When a second order or higher order reaction is converted into…

Q: Radioactive decay of unstable atomic nuclei is at first order process. The half-life for the…

A: Given: Amount of C-14 remaining in the wood = 87 % of the initial amount (as the initial amount is…

Q: A first order reaction has a half life 445.44 seconds. What is the rate constant in reciprocal…

A: The half-life of the first order reaction is 445.44 seconds. The half-life and rate constant are…

Q: A certain first-order reaction is 61 percent complete in 65 seconds. Calculate the rate constant…

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Q: The half-life (t) of a/an order reaction is independent of the initial concentration (A) (B) First…

A: Half life is the time when the initial concentration is left just half.

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…

Q: 6. Define half-life. Write the equation relating the half-life of a first-order reaction to the rate…

A: Half life is the time required by a quantity or a substance to reduce to half of its initial value.…