What is the slope of an Arrhenius plot for the following reaction 2NOCl $\rarr$ 2NO + Cl2 $\begin{array}{lc} \text { Temperature (K) } & \mathrm{k}(\mathrm{~L} / \mathrm{mol} \cdot \mathrm{~s})\\\hline 400 . & 6.6 \times 10^{-4} \\ 500 . & 2.9 \times 10^{-1} \\ 600 . & 16.3 \end{array}$

A) 8.18 * 10-2 K B) 5.06 * 10-2 K C) -1.22 * 104 K D) -1.96 * 104 K E) not enough information to calculate the slope A) 8.18 * 10-2 K B) 5.06 * 10-2 K C) -1.22 * 104 K D) -1.96 * 104 K E) not enough information to calculate the slope C

For the first-order reaction 2N2O5 $\rarr$ 2N2O4 + O2 at a particular temperature, the half-life of N2O5 is 0.90 hr. What fraction of the initial concentration of N2O5 will remain after 2.4 hours

A) 0.016 B) 0.16 C) 0.026 D) 0.26 E) None of the above A) 0.016 B) 0.16 C) 0.026 D) 0.26 E) None of the above

For the reaction BrO3- + 5Br-+ 6H+ $\rarr$ 3Br2 + 3H2O at a particular time, -$\Delta$[BrO3-]/$\Delta$t = 1.5 * 10-2 M/s. What is -$\Delta$[Br-]/$\Delta$t at the same instant

A) 13 M/s B) 7.5 * 10-2 M/s C) 1.5 * 10-2 M/s D) 3.0 * 10-3 M/s E) 330 M/s A) 13 M/s B) 7.5 * 10-2 M/s C) 1.5 * 10-2 M/s D) 3.0 * 10-3 M/s E) 330 M/s

The following mechanism has been suggested for the reaction: $\begin{array}{ll} \mathrm{H}_{2} \mathrm{O}_{2}+2 \mathrm{H}^{+}+2 \mathrm{I}^{-} \rightarrow \mathrm{I}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ \mathrm{H}_{2} \mathrm{O}_{2}+\mathrm{I}^{-} \rightarrow \mathrm{HOI}+\mathrm{OH}^{-} & \mathrm{Slow}\\ \mathrm{OH}^{-}+\mathrm{H}^{+} \rightarrow \mathrm{H}_{2} \mathrm{O} & \mathrm{Fast}\\ \mathrm{HOI}+\mathrm{H}^{+}+\mathrm{I}^{-} \rightarrow \mathrm{I}_{2}+\mathrm{H}_{2} \mathrm{O}& \mathrm{Fast} \end{array}$ Identify all intermediates included in this mechanism.

A) H+ and I - B) H+ and HOI C) HOI and OH- D) H+ only E) H2O and OH- A) H+ and I - B) H+ and HOI C) HOI and OH- D) H+ only E) H2O and OH-

At a certain temperature, the data below were collected for the reaction below.2ICl + H2 $\rarr$ I2 + 2HCl.Determine the rate law for the reaction.

A) rate = k[ICl][H2]2 B) rate = k[ICl]2[H2] C) rate = k[ICl][H2] D) rate = k[ICl]2[H2]2 E) None of the above A) rate = k[ICl][H2]2 B) rate = k[ICl]2[H2] C) rate = k[ICl][H2] D) rate = k[ICl]2[H2]2 E) None of the above

Exam 13: Chemical Kinetics

At a particular temperature the first-order gas-phase reaction N₂O₅ $\rarr$ 2NO₂ + ¹/₂O₂ has a half-life for the disappearance of dinitrogen pentoxide of 5130 s. Suppose 0.450 atm of N₂O₅ is introduced into an evacuated 2.00 L flask. What will be the total gas pressure inside the flask after 3.00 hours

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Question 1

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What is the slope of an Arrhenius plot for the following reaction 2NOCl $\rarr$ 2NO + Cl₂ Temperature (K) (/\cdot) 400. 6.6\times1 500. 2.9\times1 600. 16.3

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Question 2

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For the chemical reaction system described by the diagram below, which statement is true If the E_a for the forward reaction is 25 kJ/mol and the enthalpy of reaction is -95 kJ/mol, what is E_a for the reverse reaction

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Question 3

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Appropriate units for a second-order rate constant are

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Question 4

For the first-order reaction 2N₂O₅ $\rarr$ 2N₂O₄ + O₂ at a particular temperature, the half-life of N₂O₅ is 0.90 hr. What fraction of the initial concentration of N₂O₅ will remain after 2.4 hours

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Question 5

The half life for a first order reaction is 27 min. How long will it take for 4 half lives to occur

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Question 6

The activation energy for the reaction O + O₃ $\rarr$ 2O₂ is 25 kJ/mol, and the enthalpy change is $\Delta$ H = -388 kJ/mol. What is the activation energy for the decomposition of O₂ by the reverse reaction

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Question 7

The graphs below all refer to the same reaction. What is the order of this reaction

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Question 8

Concerning the rate law, Rate = k[A][B][C], what are appropriate units for the rate constant k

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Question 9

A certain reaction, reaction A $\rarr$ products, is first order with respect toA. Starting with [A] = 0.250M, it takes 45 min to reduce the concentration of A to 0.110M. What is its rate constant for this reaction

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Question 10

In general, to calculate the time required for a given initial concentration to decrease by 35% given the rate constant with units of 1/M^-1s^-1, which equation should be used

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Question 11

The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20 *10^-4 min^-1, and the half-life at 760 K is 29.0 min. Calculate the activation energy for this reaction.

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Question 12

For the reaction BrO₃^- + 5Br^-+ 6H⁺ $\rarr$ 3Br₂ + 3H₂O at a particular time, - $\Delta$ [BrO₃^-]/ $\Delta$ t = 1.5 * 10^-2 M/s. What is - $\Delta$ [Br^-]/ $\Delta$ t at the same instant

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Question 13

A certain first-order reaction A $\rarr$ B is 25% complete in 42 min at 25^$\circ$C. What is the half-life of the reaction

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Question 14

Benzoyl chloride, C₆H₅COCl, reacts with water to form benzoic acid, C₆H₅COOH, and hydrochloric acid. This first-order reaction is 25% complete after 26 s. How much longer would one have to wait in order to obtain 99% conversion of benzoyl chloride to benzoic acid

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Question 15

The following mechanism has been suggested for the reaction: +2+2\rightarrow+2 +\rightarrow+ +\rightarrow ++\rightarrow+ Identify all intermediates included in this mechanism.

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Question 16

The isomerization of cyclopropane to propene follows first-order kinetics. At 700 K, the rate constant for this reaction is 6.2 * 10^-4 min^-1. How many minutes are required for 10.0% of a sample of cyclopropane to isomerize to propene

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Question 17

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO₂(aq) + 2OH^-(aq) $\rarr$ ClO₂^-(aq) + ClO₃^-(aq) + H₂O(l) Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10^-1 M/s. What is the initial rate of appearance of chlorite ion under those same conditions

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Question 18

At a certain temperature, the data below were collected for the reaction below.2ICl + H₂ $\rarr$ I₂ + 2HCl.Determine the rate law for the reaction. $At a certain temperature, the data below were collected for the reaction below.2ICl + H<sub>2</sub> \rarr I<sub>2</sub> + 2HCl.Determine the rate law for the reaction.$

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Question 19

If E_a for a certain biological reaction is 50. kJ/mol, by what factor (how many times) will the rate of this reaction increase when body temperature increases from 37^$\circ$C (normal) to 40^$\circ$C (fever)

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Question 20

Showing 1 - 20 of 131

Exam 13: Chemical Kinetics

What is the slope of an Arrhenius plot for the following reaction 2NOCl →\rarr→ 2NO + Cl2 Temperature (K) (/\cdot) 400. 6.6\times1 500. 2.9\times1 600. 16.3

For the chemical reaction system described by the diagram below, which statement is true If the Ea for the forward reaction is 25 kJ/mol and the enthalpy of reaction is -95 kJ/mol, what is Ea for the reverse reaction

Appropriate units for a second-order rate constant are

For the first-order reaction 2N2O5 →\rarr→ 2N2O4 + O2 at a particular temperature, the half-life of N2O5 is 0.90 hr. What fraction of the initial concentration of N2O5 will remain after 2.4 hours

The half life for a first order reaction is 27 min. How long will it take for 4 half lives to occur

The activation energy for the reaction O + O3 →\rarr→ 2O2 is 25 kJ/mol, and the enthalpy change is Δ\DeltaΔ H = -388 kJ/mol. What is the activation energy for the decomposition of O2 by the reverse reaction

The graphs below all refer to the same reaction. What is the order of this reaction

Concerning the rate law, Rate = k[A][B][C], what are appropriate units for the rate constant k

A certain reaction, reaction A →\rarr→ products, is first order with respect toA. Starting with [A] = 0.250M, it takes 45 min to reduce the concentration of A to 0.110M. What is its rate constant for this reaction

In general, to calculate the time required for a given initial concentration to decrease by 35% given the rate constant with units of 1/M-1s-1, which equation should be used

The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20 *10-4 min-1, and the half-life at 760 K is 29.0 min. Calculate the activation energy for this reaction.

For the reaction BrO3- + 5Br-+ 6H+ →\rarr→ 3Br2 + 3H2O at a particular time, - Δ\DeltaΔ [BrO3-]/ Δ\DeltaΔ t = 1.5 * 10-2 M/s. What is - Δ\DeltaΔ [Br-]/ Δ\DeltaΔ t at the same instant

A certain first-order reaction A →\rarr→ B is 25% complete in 42 min at 25 ∘\circ∘ C. What is the half-life of the reaction

Benzoyl chloride, C6H5COCl, reacts with water to form benzoic acid, C6H5COOH, and hydrochloric acid. This first-order reaction is 25% complete after 26 s. How much longer would one have to wait in order to obtain 99% conversion of benzoyl chloride to benzoic acid

The following mechanism has been suggested for the reaction: +2+2\rightarrow+2 +\rightarrow+ +\rightarrow ++\rightarrow+ Identify all intermediates included in this mechanism.

The isomerization of cyclopropane to propene follows first-order kinetics. At 700 K, the rate constant for this reaction is 6.2 * 10-4 min-1. How many minutes are required for 10.0% of a sample of cyclopropane to isomerize to propene

At a certain temperature, the data below were collected for the reaction below.2ICl + H2 →\rarr→ I2 + 2HCl.Determine the rate law for the reaction.

If Ea for a certain biological reaction is 50. kJ/mol, by what factor (how many times) will the rate of this reaction increase when body temperature increases from 37 ∘\circ∘ C (normal) to 40 ∘\circ∘ C (fever)

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What is the slope of an Arrhenius plot for the following reaction 2NOCl $\rarr$ 2NO + Cl₂ Temperature (K) (/\cdot) 400. 6.6\times1 500. 2.9\times1 600. 16.3

For the chemical reaction system described by the diagram below, which statement is true If the E_a for the forward reaction is 25 kJ/mol and the enthalpy of reaction is -95 kJ/mol, what is E_a for the reverse reaction

For the first-order reaction 2N₂O₅ $\rarr$ 2N₂O₄ + O₂ at a particular temperature, the half-life of N₂O₅ is 0.90 hr. What fraction of the initial concentration of N₂O₅ will remain after 2.4 hours

The activation energy for the reaction O + O₃ $\rarr$ 2O₂ is 25 kJ/mol, and the enthalpy change is $\Delta$ H = -388 kJ/mol. What is the activation energy for the decomposition of O₂ by the reverse reaction

A certain reaction, reaction A $\rarr$ products, is first order with respect toA. Starting with [A] = 0.250M, it takes 45 min to reduce the concentration of A to 0.110M. What is its rate constant for this reaction

In general, to calculate the time required for a given initial concentration to decrease by 35% given the rate constant with units of 1/M^-1s^-1, which equation should be used

The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20 *10^-4 min^-1, and the half-life at 760 K is 29.0 min. Calculate the activation energy for this reaction.

For the reaction BrO₃^- + 5Br^-+ 6H⁺ $\rarr$ 3Br₂ + 3H₂O at a particular time, - $\Delta$ [BrO₃^-]/ $\Delta$ t = 1.5 * 10^-2 M/s. What is - $\Delta$ [Br^-]/ $\Delta$ t at the same instant

A certain first-order reaction A $\rarr$ B is 25% complete in 42 min at 25^$\circ$C. What is the half-life of the reaction

Benzoyl chloride, C₆H₅COCl, reacts with water to form benzoic acid, C₆H₅COOH, and hydrochloric acid. This first-order reaction is 25% complete after 26 s. How much longer would one have to wait in order to obtain 99% conversion of benzoyl chloride to benzoic acid

The isomerization of cyclopropane to propene follows first-order kinetics. At 700 K, the rate constant for this reaction is 6.2 * 10^-4 min^-1. How many minutes are required for 10.0% of a sample of cyclopropane to isomerize to propene

If E_a for a certain biological reaction is 50. kJ/mol, by what factor (how many times) will the rate of this reaction increase when body temperature increases from 37^$\circ$C (normal) to 40^$\circ$C (fever)