A first-order reaction of A → B has a rate constant of 3.5 s–1. How long will it take for the concentration of A to decrease to 25% of its initial amount? Multiple choice question. 1.39 s 4.9 s 0.40 s The initial amount of A is needed to answer the question.

Q: How long will it take for the concentration of A to decrease from 0.500 M to 0.200 M in the…

A: First Order Reaction:- The rate of Reaction is directly proportion to the concentration of Reactant…

Q: The rate law for the reaction of NO with Cl2 was found to be 2 NO() + Cl2g) → 2 NOCIg) Rate= k[NO]²…

A: a) The given rate law of the reaction is, Rate=k[NO]2[Cl2] With respect to the concentration of NO…

Q: How long will it take for the concentration of A to decrease from 0.500 M to 0.145 M in the…

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Q: Consider the reaction: 20 > 3D. In one experiment it was found that at 300 K the rate constant is…

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Q: The rate law for the reaction A + B --> products is zero order in A and second order in B. If the…

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Q: 1. What is the rate for the first order reaction A → Products when [A] = 0.201 M? (k = 0.360 1/min)…

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

Q: In one experiment, a researcher observes that increasing the concentration of M in a reaction 2M Y+Z…

A: Rate of a reaction is defined as the change in concentration of reactant or product with respect to…

Q: 2. For a certain first order reaction, the time required for half of an initial amount to decompose…

A: For a first order reaction: k = 0.693/t1/2 t = (2.303/t1/2) log(Ao/A)

Q: 0.065 10 0.0625 20 0.06 2 NH3 (g) → N2 (g) + 3 H2 (g) at 1100 degrees C 30 0.0575 40 0.055 50 0.0525…

A: We will use to determine the values of rate const for different order reaction at two different…

Q: Step 1 Identify the concentration-time equation for a first order reaction. Step 2 Calculate the…

A: 1st order kinetics Initial mass = 2.56 mg Final mass 1.89 mg Time = 474 min Rate constant = ?

Q: following is a proposed reaction mechanism for the decomposition of BrO2: 1          BrO2 + CO -->…

A: In this question, we want to determine the  rate determine step, overall Reaction, intermidiate and…

Q: A certain reaction has the following general form: aA + bB At a particular temperature and [A], =…

A: From the graph we conclude that the given reaction is second order kinetics in which a=2.

Q: By how much would the rate of reaction (see below) change if the concentration of CO increased by a…

A: Given Rate = k[NO2]2 concentration of CO increased by a factor of 2.171

Q: At a certain concentration of H2 and I2, the initial rate of reaction is 2.0 M / s. What would the…

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Q: (Q81) Hydrogen peroxide decomposes to water and oxygen gas is a first order reaction: 2 H202 (aq)…

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Q: consider a first order reaction XY--> X+Y  the rate constant is 4.8 x10^-3 1/min If the initial…

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Q: A zero-order reaction has a first half-life of 964 s. What will be the value of the seventh…

A: The half-life of the reaction is the time in which the concentration of the reacting species is…

Q: The rate law of a particular reaction is found to be, rate = k[A]²[B]. Which of the following…

A: The rate law for the given reaction is as follows: rate = kA2 B where k = specific rate constant

Q: A reaction at 20.0 °C exhibits a rate constant of 0.555 s–1. If the reaction is performed at 60 °C,…

A: Consider the given information is as follows; Initial temperature (T1) = 20.0°C = 20.0 + 273.15 =…

Q: From the given data, use a graphical method to determine the order and rate constant of the…

A: Using the given data, we will make three plots (unless the first plot is a straight line) to…

Q: rate

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Q: A reaction is found to have the rate law: Rate = 0.355 M-1s-1[A]2.  If a reaction is started with…

A: Given :  Rate = 0.355 M-1s-1[A]2  [A]o = 0.340 M (initial concentration) [A] = 0.100 M (final…

Q: For the reaction 5X + 2Y → 2Z + 5U, at a particular instant in time, the rate of the reaction is…

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Q: A reaction has a rate law of Rate = (1.25 M⁻²s⁻¹)[A][B]². What concentration of [B] would give the…

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Q: If the rate constant for this second-order reaction is 8.0 x 10^-8 L mol^-1 s -1 , what is the…

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Q: proceeds: time (milliseconds) H3PO4 0 0.0300M 10. 0.0174M 20. 0.0101M 30. 0.00583M 40. 0.00338M…

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Q: A chemistry graduate student is studying the rate of this reaction: 2H₂PO4 (aq) → P₂O, (aq) + 3H₂O…

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Q: A chemistry graduate student is studying the rate of this reaction: 2NH3(g) → N₂(g) + 3H₂(g) She…

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Q: Reaction 1: A first order reaction (A à products) has the rate constant k = 0.483 min-1 (Rate =…

A: Using the integral rate law equation for 1st order and 2nd order to determine. Which will take more…

Q: The overall reaction 2A + 2B = D+ E takes place in two steps: STEP 1 (fast): A + 2B = C STEP 2…

A: Rate of a reaction is a measure of change in concentration with respect to time. Rate law is used to…

Q: A chemistry graduate student is studying the rate of this reaction: 2H₂PO4 (aq) → P₂O5, (aq) + 3H₂O…

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Q: The first-order decomposition, A → products, has a rate constant of 0.02 s-1. Starting with [A], =…

A: First-order reaction:The rate of the first-order reaction depends only on one reactant. According to…

Q: The reaction 2H2(g) + 2NO(g) ----> 2H2O(g) + N2(g) is a first-order in H2 and second order in NO.…

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Q: A chemistry graduate student is studying the rate of this reaction: 2N₂O5 (g) → 2N₂O4 (8) +0₂ (8)…

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Q: A certain reaction is known to have an activation energy E-41.0 kJ/mol. Furthermore, the rate of…

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Q: The rate constant for the second order reaction 2 NO2  2 NO + O2 is 0.31 M-1s-1.  If a 4.33 M sample…

A: In order to calculate the concentration of nitrogen dioxide we first write down the given data:…

Q: The reaction 2H2(g) + 2ClO(g) --------> 2H2O(g)+ Cl2(g) is first-order in H2 and second-order in…

A: Rate law for a reaction like A + B →C , is written as  Rate = k [A]a[B]b Where, [A] and [B] are the…

Q: The rate constant for the second order reaction: 2NOBr --> 2NO + Br2 is 0.80/(M x s) at 10 degrees…

A: Given that: Given reaction is 2NOBr → 2NO + Br2 Rate constant k = 0.80 M-1s-1 Temperature = 10°C…

Q: Iron(III) chloride is reduced by tin(II) chloride. 2FeCls(aq) +SnCl,(aq) → 2FeCl,(aq) +SnCl(aq)…

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Q: Determine the rate constant for the second-order reaction     2 A   →   B   +   2 C, given that the…

A: Rate Constant (k) = 2.71 x 10-3 M-1s-1

Q: The following data was collected for the reaction 3 H2 + N2 2 NH3. Time (s) [H2] (M) 1.00 10 0.75…

A: The reaction given is  3 H2 + N2 -------> 2 NH3  And the data given is

Q: A particular first-order reaction has a rate constant of 1.35 × 102 s−1 at 25.0 ∘C. What is the…

A: According to the clausius clapeyron equation, ln(K2 / K1) = (-Ea /R) X (1/T2 - 1/T1)  where K2 =…

Q: In a study to determine the rate of the following reaction: $$2NO(g)+O2​(g) 2NO2​(g) the…

A: Given: A balanced chemical equation,             2NOg + O2g → 2NO2g Time (t1) = 5s Time (t2) = 650s…

Q: The decomposition of nitrogen dioxide is a second order reaction. At 560 K, a 0.25 M sample…

A: Rate= k [NO2]2 , because it is a second order reaction.

Q: The mechanism proposed for the reaction of H2 (g) and I2 (g) to form HI (g) consists of a fast,…

A: It is given that first step is fast in which I (gP is produced from I2 (g) . So this step is in…

Q: The following is a proposed reaction mechanism for the decomposition of BrO2: 1          BrO2 + CO…

A: Since you have asked a question with  multiple sub-parts, we will solve  first three sub-parts for…

Q: The rate constant, k, for a first-order reaction is equal to 4.3 × 10-4 s-1. What is the half-life…

A: half-life for the reaction is given by:

Q: Consider the following reaction and its corresponding rate law to answer the 2 NO (g) + 02 (g) - 2…

A: Rate = K [ NO]2 [ O2]