(i) If half life period of first order reaction is x and 3/4 th life period of same reaction is ’y’, how are V and ’y’ related to each other?(ii) In some cases it is found that a large number of colliding molecules have energy more than threshold energy but yet the reaction is slow. Why?

Q: The reaction A → B + C is zero order with respect to A. When [A]0 = 0.71 M, the reaction is 51.1 %…

A: Given-------- [Ao]=0.71M Time t=63.4min Reaction is 51.1% completed so reactant remain =0.71-(…

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

A:

Q: What is the rate constant for a first order reaction for which the half-life is 85.0 sec?

A: Since we know that the relationship between the concentration of reactant i.e [A] and time for a…

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: In the first-order decomposition of dinitrogen pentoxide at 335 K : N2O5 (g) (yields) 2 NO2 (g) + ½…

A: Given: Sample weight in g initially = 2.50 g Sample weight after 109 s = 1.50 g Time, t = 109 s The…

Q: What is the half-life of a first order reaction with a rate constant of 0.457 s?

A: The time required for the reactant's concentration to reach half of its initial concentration is…

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

A: a.

Q: The half life of a first order reaction is 28 second.what is its rate constant?

A: Half life (t1/2) :- " The time required for half of the reactants to convert into products is called…

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: (a) What is the rate constant k for the first-order decomposition of N2O5(g) at 25°C if the…

A: The relation between concentration of the reactants and the reaction rate of a chemical reaction is…

Q: 7. If the half-life for the decomposition of a drug is 6 hours, how long will it take for 125 mg of…

A: Half life = 6 hours Initial quantity = 125 mg Quantity left after time t = 70% (125) mg

Q: What is the half life (t1/2), in units of seconds,  for a first order reaction that has a k value of…

A: In the first-order reaction, the half-life will not be influenced by the concentration of the…

Q: The rate at which a certain drug is eliminated by the body follows first-order kinetics, with a half…

A: According to first order kinetics- [A] = [A]° ekt

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

A:

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

A:

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: When a 5.0010 mg aspirin tablet is taken it decomposes via zeroth order kinetics with a half-life of…

A: The time in which the concentration of a species becomes half of its initial concentration is called…

Q: Distinguish between zeroth-order. first-order. second-order. and pseudofirst-order reactions; under…

A: Order of a reaction can be defined as the sum of the exponents to which the concentration terms are…

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

A: The rate law is an expression in which the rate of a reaction is the product of the molar…

Q: Derive an expression for the half-life of a second-order reaction in terms of the rate constant k.

A: The time in which half of the reactant gets decomposed is known as half life time of the reaction…

Q: Given a reaction vessel of 0.361 M C4H8(g) which obeys first order kinetics and has a half-life of…

A: A first order reaction is that in which the order with respect to a reactant is one.Its integrated…

Q: percent of a given sample of the compound A decomposes in 60.0 min? Assume first-order kinetics. If…

A: As we know, First order kinetics λ=1tlnaoao-x=1tlnaoa Where, λ= Decay constant ao= initial…

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

A:

Q: The radioactive nuclide 63Ni decays by a first-order process via the emission of a beta particle.…

A: Given data: Half life = 160 years Now by using relation between rate constant and half life of 1st…

Q: E17B.1(b) In a study of the enzyme-catalysed oxidation of ethanol, the molar concentration of…

A: Given information:Initial concentration = 220 mmol.dm-3Final concentration = 56.0 mmol.dm-3Time =…

Q: 4. Given thát the IT-life of å a 100 mg drug that follows a first-order process is 30min. How long…

A: 15.5 min

Q: Which of the following is true: I. First order reactions proceed at a constant rate II. First order…

A: Given- First order reaction.

Q: The reaction of compound A to give compounds C and D was found to be second-order in A. The rate…

A:

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

A:

Q: the

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Q: A number of reactions that take place on the surfaces of cata lysts are zeroth order in the…

A: A zeroth-order reaction is a reaction in which the rate of the chemical reaction does not depend on…

Q: What is the half-life of a first-order reaction which is 15% complete after 210 seconds?

A: Given, time to consume 15 % of reaction for first order = 210 sec we are asked to calculate the…

Q: A certain second-order reaction (B→products) has a rate constant of 1.50×10−3 M−1⋅s−1 at 27 ∘C and…

A:

Q: What is the half-life of a compound, A, if 75.0 percent of a given sample of the compound A…

A: Given,it follows the first order kinetics. So, using the formula we can determine the required data.…

Q: Consider the second-order decomposition of A under the following conditions: The initial…

A:

Q: 4. A reaction is first order in A. If the rate constant of the reaction is 6.00 x 10s', what is the…

A: Order of reaction = 1 st order  Rate constant (k) = 6.00 × 10-3 s-1 Half Life (t1/2) = ?

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: A compound decomposes by a first order process. If 25.0 % of the compound decomposes in 60.0…

A: Answer: Half life of the compound is 145 min.

Q: What is the half-life of a first-order reaction with a rate constant of 7.70×10−4 s^−1?

A: Given: Order of reaction = 1 And rate constant of the reaction = 7.70 X 10-4 s-1.

Q: ST6C.3 - Radioactive iodine-131 decays with first-order kinetics (like all radioactive material) and…

A:

Q: A zeroth order reaction is of the form aA bB. When the [A]o is 2.303 mol/L the [A] is .849 mol/L…

A: Given in the question , aA →bBIt is a zero order reaction.After time = 17.7 minutes[A] = 0.849…

Q: (a) The decomposition of A into products has a value of K as 4.5 × 103 s-1 at 10°C and energy of…

A: Rate of a reaction as well as the rate constant increases with increase in the temperature. The…

Q: a)How long will it take for a sample of the original compound (CH3COCH2COOH) to be 37.0% decomposed?

A: Given  CH3COCH2COOH(aq) → CH3COCH3(aq) + CO2(g)  half-life of 144 minutes.