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Arrhenius Equation Solutions Library

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135 solutions

Arrhenius Equation

Q. Hydrogen peroxide decomposes into water and oxygen by the following reaction:2 H2O2(aq) ↔ 2 H2O(l) + O2(g) ΔHrxn = -94.64 kJ/molExperimental eviden...

Solved • Mar 20, 2020

Arrhenius Equation

Q. The following reaction has an activation energy of 262 kJ/mol.C4H8(g) → 2C2h4(g)At 600.0 K the rate constant is 6.1× 10–8 s–1. What is the value of...

Solved • Mar 17, 2020

Arrhenius Equation

Q. The decomposition reaction shown below exhibits first-order kinetic behavior.N2O5 (g) → N2O4 (g) + 1/2 O2 (g)At 298 K, the rate constant k is measu...

Solved • Mar 16, 2020

Arrhenius Equation

Q. The temperature dependence of the equilibrium constant (Kp) is illustrated for the following reaction:NH4ClO4(s) → NH3(g) + HClO4(g)Note: the point...

Solved • Mar 16, 2020

Arrhenius Equation

Q. A certain first-order reaction has a rate constant of 2.75 x 10-2 s-1 at 25°C. What is the value of K at 90.0 °C if Ea = 275 kJ/mol?a. 1.16x107 s-1...

Solved • Jan 27, 2020

Arrhenius Equation

Q. A reaction has rate constant of 0.27 min-1 at 45 C and 0.90 min-1 at 55 C. What is the activation energy for the reaction (in kJ/mol)?A. -10.4B. 10...

Solved • Jan 24, 2020

Arrhenius Equation

Q. Increasing the reaction temperature from 25°C to 30°C raises the reaction rate 7.5- fold. What is the rate constant for the at 27.5 °C? Activation ...

Solved • Jan 23, 2020

Arrhenius Equation

Q. Increasing the reaction temperature from 25°C to 30°C raises the reaction rate 7.5- fold. What is the activation energy?A. 5.5 kJ B. 303 kJ C. 43.1...

Solved • Jan 23, 2020

Arrhenius Equation

Q. A reaction has a rate constant k = 8.54 x 10-4 s-1 at 45 °C and an activation energy, Ea = 90.8 kJ. What is the value of k at 25 °C?A. 8.52 x 10-4 ...

Solved • Dec 20, 2019

Arrhenius Equation

Q. Which of the following can lower the activation energy for a reaction?a. Increasing the concentration of reactantsb. Raising the temperature of the...

Solved • Dec 19, 2019

Arrhenius Equation

Q. Dinitrogen tetraoxide, N2O4, decomposes to nitrogen dioxide, NO2, in a first-order process. If k = 1.5 x 103 s-1 at 10 °C and k = 4.0 x 103 s-1 at ...

Solved • Dec 19, 2019

Arrhenius Equation

Q. Dinitrogen tetraoxide, N 2O 4, decomposes to nitrogen dioxide, NO 2, in a first-order process. If k = 2.5 x 10 3 s -1 at 5 oC and k = 7.0 x 10 4 s ...

Solved • Dec 19, 2019

Arrhenius Equation

Q. Food rots about 30 times more rapidly at 25 °C than when it is stored at 6 °C. Determine the overall activation energy for the processes responsibl...

Solved • Dec 16, 2019

Arrhenius Equation

Q. Food rots about 50 times more rapidly at 25 °C than when it is stored at 6 °C. Determine the overall activation energy for the processes responsibl...

Solved • Dec 11, 2019

Arrhenius Equation

Q. Food rots about 40 times more rapidly at 25 °C than when it is stored at 4 °C. Determine the overall activation energy for the processes responsibl...

Solved • Nov 1, 2019

Arrhenius Equation

Q. Which statement best describes the relationship between activation energy and rate of reaction?A.Increasing the activation energy can increase the ...

Solved • Aug 27, 2019

Arrhenius Equation

Q. Hydrogen peroxide decomposes into water and oxygen by the following reaction:2 H2O2(aq) ↔ 2 H2O(l) + O2(g) ΔHrxn = -94.64 kJ/molExperimental eviden...

Solved • Jul 9, 2019

Arrhenius Equation

Q. Does the orientation factor depend on temperature?

Solved • Dec 6, 2018

Arrhenius Equation

Q. Which factor is most sensitive to changes in temperature—the frequency of collisions, the orientation factor, or the fraction of molecules with ene...

Solved • Dec 6, 2018

Arrhenius Equation

Q. At 28 oC, raw milk sours in 4 h but takes 50 h to sour in a refrigerator at 5 oC.Estimate the activation energy in kJ/mol for the reaction that lea...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The accompanying graph shows plots of ln k versus 1/T for two different reactions. The plots have been extrapolated to the y-intercepts.Which react...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The accompanying graph shows plots of ln k versus 1/T for two different reactions. The plots have been extrapolated to the y-intercepts. Which reac...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The enzyme urease catalyzes the reaction of urea, (NH2CONH2), with water to produce carbon dioxide and ammonia. In water, without the enzyme, the r...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The gas-phase reaction of NO with F2 to form NOF and F has an activation energy of Ea = 6.3 kj/mol and a frequency factor of A = 6.0 x 108 M-1 s - ...

Solved • Dec 6, 2018

Arrhenius Equation

Q. Two reactions have identical values for Ea. Does this ensure that they will have the same rate constant if run at the same temperature?

Solved • Dec 6, 2018

Arrhenius Equation

Q. Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a catalyst.Assuming tha...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The activation energy for the isomerization of methyl isonitrile  is 160 kJ/mol.Calculate the fraction of methyl isonitrile molecules that have an ...

Solved • Dec 6, 2018

Arrhenius Equation

Q. Calculate the fraction of atoms in a sample of argon gas at 401 K that have an energy of 11.6 kJ/mol or greater.

Solved • Dec 6, 2018

Arrhenius Equation

Q. The temperature dependence of the rate constant for the reaction is tabulated as follows:Temperature (K)   k (M-1s-1) 6000.0286500.227001.37506.080...

Solved • Dec 6, 2018

Arrhenius Equation

Q. A friend studies a first-order reaction and obtains the following three graphs for experiments done at two different temperatures.Which graph proba...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The reaction between nitrogen dioxide and carbon monoxide is NO2(g) + CO(g) NO(g) + CO2(g). The rate constant at 701 K is measured as 2.57 M-1s-1 a...

Solved • Dec 6, 2018

Arrhenius Equation

Q. Consider the following reaction: O3(g) → O2(g) + O(g)Using the results of the Arrhenius analysis (Ea= 93.1kJ/mol and A = 4.361011M), predict the ra...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The rate constant of a reaction is measured at different temperatures. A plot of the natural log of the rate constant as a function of the inverse ...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The kinetics of the following second-order reaction were studied as a function of temperature: C2H5Br(aq) + OH–(aq) → C2H5OH(l) + Br–(aq)Temperatur...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The kinetics of the following second-order reaction were studied as a function of temperature: C2H5Br(aq) + OH–(aq) → C2H5OH(l) + Br–(aq)Temperatur...

Solved • Dec 6, 2018

Arrhenius Equation

Q. A reaction has a rate constant of 1.19×10−2 /s at 400. K and 0.690 /s at 450. K.What is the value of the rate constant at 425 K?

Solved • Dec 6, 2018

Arrhenius Equation

Q. Suppose that a catalyst lowers the activation barrier of a reaction from 126 kJ/mol to 56 kJ/mol. By what factor would you expect the reaction rate...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The activation barrier for the hydrolysis of sucrose into glucose and fructose is 108 kJ/mol. If an enzyme increases the rate of the hydrolysis rea...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The activation energy of a reaction is 56.6 kJ/mol and the frequency factor is 1.5 x 1011 /s. Calculate the rate constant of the reaction at 25 oC.

Solved • Dec 6, 2018

Arrhenius Equation

Q. The data shown below were collected for the following first-order reaction: N 2O(g) → N2(g) + 1/2 O2(g) Temperature (K)  Rate Constant  (1/s)8003.2...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The following data show the rate constant of a reaction measured at several different temperatures. Temperature (K)  Rate Constant  (1/s)3002.15×10...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The following data show the rate constant of a reaction measured at several different temperatures. Temperature (K)  Rate Constant  (1/s)3100.19032...

Solved • Dec 6, 2018

Arrhenius Equation

Q. Reaction A and reaction B have identical frequency factors. However, reaction B has a higher activation energy than reaction A.Which reaction has a...

Solved • Dec 6, 2018

Arrhenius Equation

Q. The decomposition of NH3 to N2 and H2 was studied on two surfaces:Without a catalyst, the activation energy is 335 kJ/mol.a. Which surface is the b...

Solved • Nov 7, 2018

Arrhenius Equation

Q. One mechanism for the destruction of ozone in the upper atmosphere isc. Ea for the uncatalyzed reactionO3 (g) + O (g) → 2O2 (g)is 14.0 kJ. Ea for t...

Solved • Nov 7, 2018

Arrhenius Equation

Q. The reaction(CH3)3CBr + OH- → (CH3)3COH + Br-in a certain solvent is first order with respect to (CH 3)3CBr and zero order with respect to OH 2. In...

Solved • Nov 7, 2018

Arrhenius Equation

Q. Consider the hypothetical reaction A 2 (g) + B2 (g) → 2AB (g), where the rate law is:The value of the rate constant at 302°C is 2.45 x 10 -4 L/mol•...

Solved • Nov 6, 2018

Arrhenius Equation

Q. The activation energy of a certain uncatalyzed biochemical reaction is 50.0 kJ/mol. In the presence of a catalyst at 37°C, the rate constant for th...

Solved • Nov 6, 2018

Arrhenius Equation

Q. Experimental values for the temperature dependence of the rate constant for the gas-phase reactionNO + O3 → NO2 + O2are as follows:Make the appropr...

Solved • Nov 6, 2018

Arrhenius Equation

Q. The activation energy for a reaction is changed from 184 kJ/mol to 59.0 kJ/mol at 600. K by the introduction of a catalyst. If the uncatalyzed reac...

Solved • Nov 6, 2018

Arrhenius Equation

Q. A popular chemical demonstration is the “magic genie” procedure, in which hydrogen peroxide decomposes to water and oxygen gas with the aid of a ca...

Solved • Nov 6, 2018

Arrhenius Equation

Q. Which of the following reactions would you expect to proceed at a faster rate at room temperature? Why? (Hint: Think about which reaction would hav...

Solved • Nov 6, 2018

Arrhenius Equation

Q. Chemists commonly use a rule of thumb that an increase of 10 K in temperature doubles the rate of a reaction. What must the activation energy be fo...

Solved • Nov 6, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 54.0 kJ/mol. As the temperature is increased from 22°C to a higher temperature, the rate constant in...

Solved • Nov 6, 2018

Arrhenius Equation

Q. A first-order reaction has rate constants of 4.6 x 10 -2 s-1 and 8.1 x 10-2 s-1 at 0°C and 20.°C, respectively. What is the value of the activation...

Solved • Nov 6, 2018

Arrhenius Equation

Q. The activation energy for the decomposition of HI(g) to H 2(g) and I2(g) is 186 kJ/mol. The rate constant at 555 K is 3.52 x 10-7 L/mol•s. What is ...

Solved • Nov 6, 2018

Arrhenius Equation

Q. The reaction(CH3)3CBr + OH- → (CH3)3COH + Br-in a certain solvent is first order with respect to (CH 3)3CBr and zero order with respect to OH 2. In...

Solved • Nov 6, 2018

Arrhenius Equation

Q. The rate constant for the gas-phase decomposition of N 2O5,N2O5 → 2NO2 + 1/2 O2has the following temperature dependence:Make the appropriate graph ...

Solved • Nov 6, 2018

Arrhenius Equation

Q. Human liver enzymes catalyze the degradation of ingested toxins. By what factor is the rate of a detoxification changed if an enzyme lowers the Ea ...

Solved • Nov 2, 2018

Arrhenius Equation

Q. The rate constant of a reaction is 4.50×10−5 L/mol•s at 195°C and 3.20 x 10-3 L/mol•s at 258°C. What is the activationenergy of the reaction?

Solved • Nov 1, 2018

Arrhenius Equation

Q. The rate constant of a reaction is 4.7 x 10-3 s-1 at 25°C, and the activation energy is 33.6 kJ/mol. What is k at 75°C?

Solved • Nov 1, 2018

Arrhenius Equation

Q. The hydrolysis of the sugar sucrose to the sugars glucose and fructose, C12H22O11 + H2O ⟶ C6H12O6 + C6H12O6 follows a first-order rate equation for...

Solved • Oct 31, 2018

Arrhenius Equation

Q. Hydrogen iodide, HI, decomposes in the gas phase to produce hydrogen, H2, and iodine, I2. The value of the rate constant, k, for the reaction was m...

Solved • Oct 31, 2018

Arrhenius Equation

Q. The rate constant for the decomposition of acetaldehyde, CH3CHO, to methane, CH4, and carbon monoxide, CO, in the gas phase is 1.1 × 10−2 L/mol/s a...

Solved • Oct 31, 2018

Arrhenius Equation

Q. The rate constant at 325 °C for the decomposition reaction C4H8 ⟶ 2C2H4 is 6.1 × 10−8 s −1, and the activation energy is 261 kJ per mole of C4H8. D...

Solved • Oct 31, 2018

Arrhenius Equation

Q. In an experiment, a sample of NaClO3 was 90% decomposed in 48 min. Approximately how long would this decomposition have taken if the sample had bee...

Solved • Oct 31, 2018

Arrhenius Equation

Q. The rate of a certain reaction doubles for every 10 °C rise in temperature.(b) How much faster does the reaction proceed at 95 °C than at 25 °C?

Solved • Oct 31, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 26.98 kJ/mol. At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at ...

Solved • Oct 24, 2018

Arrhenius Equation

Q. Use the following information to determine the value of Ea for a typical reaction: 

Solved • Oct 2, 2018

Arrhenius Equation

Q. The following data show the rate constant of a reaction measured at several different temperatures. Part AUse an Arrhenius plot to determine the ac...

Solved • Sep 18, 2018

Arrhenius Equation

Q. A reaction has a rate constant of 1.28 x 10-4 s-1 at 28°C and 0.227 s-1 at 76°C. Part ADetermine the activation barrier for the reaction.Express yo...

Solved • Sep 18, 2018

Arrhenius Equation

Q. The high temperature in an automobile engine cause nitrogen and oxygen to from noxius nitrogen monoxide. Use the following data on temperature depe...

Solved • Sep 13, 2018

Arrhenius Equation

Q. The rate constant of a reaction is 9.25 x 10-5 L/mol • s at 195°C and 7.65 x 10-3 L/mol • s at 258°C. What is the activation energy of the reaction...

Solved • Sep 12, 2018

Arrhenius Equation

Q. We know that for a given reaction when the temperature increases from 100 K to 200 K the rate constant doubles. What is the activation energy in kJ...

Solved • Sep 5, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 55.54 kJ/mol. At what Kelvin temperature will the reaction proceed 7.50 times faster than it did at ...

Solved • Sep 5, 2018

Arrhenius Equation

Q. Consider the reaction O (g) + N2 (g) → NO (g) + N (g) At 800°C, the rate constant is 9.7 x 1010 L/(mol s). The activation energy is 315 kJ/mol. Cal...

Solved • Aug 30, 2018

Arrhenius Equation

Q. Enter your answer in the provided box. The rate constant of a first-order reaction is 2.20 x 10-4 s-1 at 350°C. If the activation energy is 137 kJ/...

Solved • Aug 30, 2018

Arrhenius Equation

Q. Enter your answer in the provided box.Given the same reactant concentrations the reaction CO (g) + Cl2 (g) → COCl2 (g) at 229°C is 47.1 times as fa...

Solved • Aug 30, 2018

Arrhenius Equation

Q. A particular first-order reaction has a rate constant of 1.35 x 102s-1 at 25.0°C. What is the magnitude of k at 41.0°C if Ea = 55.5 kJ/mol.(a) 2.00...

Solved • Aug 27, 2018

Arrhenius Equation

Q. The following reaction has an activation energy of 262 kJ/mol. C4H8(g) → 2C4H4(g) At 600.0K the rate constant is 6.1 x 10-8 s-1. What is the value ...

Solved • Aug 14, 2018

Arrhenius Equation

Q. QUESTION 11The rate constant is constant at all temperatures.            a. True            b. False QUESTION 12Consider the following reaction at ...

Solved • Aug 1, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 25.36 kJ/mol. At what Kelvin temperature will the reaction proceed 3.00 times faster than it did at ...

Solved • Jul 31, 2018

Arrhenius Equation

Q. Hydrogen peroxide decomposes spontaneously to yield water and oxygen gas according to the following reaction equation. 2H2O2 (aq) → 2H2O (l) + O2 (...

Solved • Jul 31, 2018

Arrhenius Equation

Q. Question 1The activation energy for the decomposition of N2O4 is 57.2. kJ/mol. If the rate constant for the reaction is 3.4 x 104s-1 at 25 °C, what...

Solved • Jul 30, 2018

Arrhenius Equation

Q. Rate constants for the reaction NO2 (g) + CO (g) → NO (g) + CO2 (g) are 1.3 M -1 s-1 at 700 K and 23.0 M -1 s-1 at 800 K. a) What is the value of t...

Solved • Jul 26, 2018

Arrhenius Equation

Q. The following reaction has an activation energy of 262 kJ/mol. C4H8 (g) → 2C2H4 (g) At 600.0 K the rate constant is 6.1 x 10-8 s-1. What is the val...

Solved • Jul 25, 2018

Arrhenius Equation

Q. The activation energy of an uncatalyzed reaction is 90 kJ/mol. The addition of a catalyst lowers the activation energy to 52 kJ/mol. Assuming that ...

Solved • Jul 16, 2018

Arrhenius Equation

Q. The water in a pressure cooker boils at a temperature greater than 100°C because it is under pressure. At this higher temperature, the chemical rea...

Solved • Jul 10, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 32.89 kJ/mol. At what Kelvin temperature will the reaction proceed 7.00 times faster than it did at ...

Solved • Jun 26, 2018

Arrhenius Equation

Q. The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/T (in K) is linear and has a slope of -1.16...

Solved • Jun 19, 2018

Arrhenius Equation

Q. The following data show the rate constant of a reaction measured at several different temperatures. Part A Use an Arrhenius plot to determine the a...

Solved • Jun 19, 2018

Arrhenius Equation

Q. At 552.3 K, the rate constant for the thermal decomposition of SO 2Cl2 is 1.02 x 10-6 s-1. If the activation energy is 210 kJ/mol, calculate the Ar...

Solved • Jun 19, 2018

Arrhenius Equation

Q. If Kc = 0.400 at 40°C and Kc = 0.635 at 90°C, what is ΔH° for the reaction? X ⇌ Y

Solved • Jun 6, 2018

Arrhenius Equation

Q. The rate of a certain reaction was studied at various temperatures. The table shows temperature (T) and rate constant (k) data collected during the...

Solved • May 31, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 74.13 kJ/mol. At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at ...

Solved • May 29, 2018

Arrhenius Equation

Q. A certain reaction has an activation energy of 63.32 kJ/mol. At what Kelvin temperature will the reaction proceed 7.00 times faster than it did at ...

Solved • May 27, 2018

Arrhenius Equation

Q. The activation energy of a certain reaction is 34.5 Kj/mol. At 21°C, the rate constant is 0.0190s-1  . At what temperature at degrees Celsius would...

Solved • May 27, 2018

Arrhenius Equation

Q. Calculate the rate constant ar 200 C for a reaction that has a rate constant of  9.50x10-4 s-1 at 90°C and an activation energy of 52.2 KJ/mol. 

Solved • May 21, 2018

Arrhenius Equation

Q. The rate at which tree crickets chirp is 2.10x102 per minute at 28 ° C but only 36.4 per minute at 8.0 °C. From these data, calculate the activatio...

Solved • May 21, 2018

Arrhenius Equation

Q. The rate constant of a first-order reaction is 4.35 times 10-4 s- at 350. °C. If the activation energy is 137 kJ/mol, calculate the temperature at ...

Solved • May 21, 2018