The breakdown of a certain pollutant X in sunlight is known to follow first-order kinetics. An atmospheric scientist studying the process fills a 15.0 L reaction flask with a sample of urban air and finds that the partlal pressure of X In the flask decreases from 0.115 atm to 0.0753 atm over 8.7 hours. Calculate the initial rate of decomposition of X, that is, the rate at which X was disappearing at the start of the experiment. Round your answer to 2 significant digits.

Q: The rate constant of a first-order reaction, A→ products, can be determined from a graph of In[A]…

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Q: The rate of the reaction N205(g) → 2 NO2(g) + 1/2 O2(g) is measured at different temperatures, with…

A: Arrhenius equation is the equation that gives the effect of temperature on rate constant of the…

Q: A chemical reaction is characterized by the following experimental data: Rate Constant (L mol-'s-)…

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Q: In determination of reaction order, What does it mean if the order of the reaction with respect to…

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Q: If the rate laws are expressed with (i) concentrations in molecules per cubic metre, (ii) pressures…

A: The general expression for determining the units for the rate constant is as follows:

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: Dinitrogen tetraoxide, N2O4, decomposes to nitrogen dioxide, NO2, in a first-order process. If k=…

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Q: Distinguish between homogeneous catalysis and heterogeneous catalysis. Describe three important…

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Q: Calculate time it takes the partial pressure of X too far below the partial pressure of white round…

A: As both the gas decomposes, the partial pressure also decreases. The reason is the partial pressure…

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: Describe what is  First-Order Reaction?

A: First order reaction has to be described.

Q: A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide…

A: The rate is given as Rate = K×[O3][NO] initially, we are given concentration of: [O3] = 4.40 × 10-6…

Q: The activation energy for a reaction is changed from 184 kJ/mol to 59.0 kJ/mol at 600. K by the…

A: Arrhenius Equation shows the dependence of the rate constant on the pre-exponential factor, absolute…

Q: Consider an uncatalyzed reaction that has an activation energy of 240 kJ/mol at 300 K. When a…

A: Given: The activation energy of uncatalyzed reaction= 240 kJ/mol  The activation energy of catalyzed…

Q: A reaction has an activation energy of 15 kJ mol. The temperature of the reaction must be increased…

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Q: A particular reactant decomposes with a half‑life of 155 s155 s when its initial concentration is…

A: For the same reactant, if the half life increases with the decrease in the concentration then it…

Q: One example of a first order reaction is the isomerization of hydrogen isocyanide to hydrogen…

A: The first order reaction is kinetic reaction are those reaction where the rate of the reaction is…

Q: It is found that a gas undergoes a zero-order decomposition reaction in the presence of a nickel…

A: For a zero order reaction, the rate of the reaction is independent of the concentration of the…

Q: The breakdown of a certain pollutant X in sunlight is known to follow first-order kinetics. An…

A: Given: Kinetics is first-order. Initial pressure of gas = 0.100 atm. Final pressure of gas = 0.0601…

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: What factor(s) go into determining the rate constant, k, for a reaction? (Select all that apply.)…

A: Rate constant may be defined as the rate of reaction when the concentration of all the reactants is…

Q: The activation energy for a reaction is changed from 184 kJ/mol to 59.0 kJ/mol at 600. K by the…

A: Activation energy (Ea) is changed from 184kJ/mol to 59.0kJ/mol Temperature = 600K Catalyzed reaction…

Q: Of the following, all are valid units for a reaction rate except ________.     g/s     mol/L-hr…

A: Rate of Reaction is defined as the rate of change in concentration of reactant or product per unit…

Q: What is a specific rate constant (k)? Please explain in simple terms. How is this any different from…

A: Take the example of a reaction  X -> P where X is the reactant and P is the product.  With time…

Q: A catalyst decreases the activation energy of a particular exothermic reaction by 20 kJ/mol, to 36…

A: Activation energy for uncatalyzed reaction = 36kJ/mol Activation energy for catalyzed reaction =…

Q: What is the unit of k in a zero-order reaction?

A: We know that order of a reaction is the relationship between the rate of a reaction and the…

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: The age of wine can be determined by measuring the trace amount of radioactive tritium, ³H, present…

A: N(t)=N0 exp[-k t]N(t) is the number of radioactive nuclei remaining at time t, N0 is the initial…

Q: A chemistry graduate student is studying the rate of this reaction: CICH,CH,CI (g) → CH,CHCI (g)…

A: Recall the given reaction,                ClCH2CH2Cl g  →  CH2CHCl g  +  HCl gWe have to calculate…

Q: The breakdown of a certain pollutant X in sunlight is known to follow first-order kinetics. An…

A: Rate law for the reaction is,

Q: Explain enzyme kinetics including zero-order and first-order kinetics.

A: Answer - Enzyme kinetics - Enzyme kinetics is the study of the rates of enzyme-catalysed chemical…

Q: The activation energy of an uncatalyzed reaction is 95 kJ/mol. The addition of a catalyst lowers the…

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Q: Define the terms "homogeneous catalysis" and "heterogeneous catalysis."

A: The Catalytic process in which a catalyst mixes with the reactants in such a way that it forms…

Q: Distinguish between the following: Homogeneous and heterogeneous catalysis’ Molecularity and order…

A: 1) Homogeneous and heterogeneous catalysis                        Homogeneous catalysis…

Q: The activation energy for a reaction is changed from 184 kJ/ mol to 59.0 kJ/mol at 600. K by the…

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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 rate constant for a particular zero-order reaction is 0.075 M s1 If the initial concentration of…

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Q: The half-life for the decomposition of dinitrogen pentoxide at 70 °C is 101.6 s. At the beginning of…

A: Given, Half life = 101.6 s Initial [N2O5] = 0.025 moles Final [N2O5] = 0.01 mol

Q: 2. Variation of the rate constant with temperature for the first-order reaction 2 N2O5(g) → 2…

A: The arhenius equation shows the relation between the rate constant and temperature.

Q: The following chemical reaction HI(g) + CH,I(g) → CH,(g) + L(g) is characterized by the experimental…

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Q: The overall reaction: S2O82– + 2I – → 2SO42– + I2. can be catalyzed by certain chemical species.…

A: Catalysts increase the rate of reaction by decreasing the activation energy and do not get utilized…

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: The age of wine can be determined by measuring the trace amount of radioactive tritium, 3H, present…

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Q: A chemistry graduate student is studying the rate of this reaction: Н,со, (аq) - н,о (аq) + со, (ag)…

A: We have been asked to determine the rate law and rate constant from the given data.

Q: Determine the rate constant k of a zero-order reaction in M/s, if the initial concentration of…

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Q: What is the difference between reaction rate and the specific rate constant (k)?

A: Given : Reaction rate and specific rate constant i.e k.