Given the following proposed mechanism,predict the rate law for the overall reaction. $\quad$$\quad$2NO2 + Cl2 → 2NO2Cl (overall reaction) $\quad$$\quad$$\underline{\text{Mechanism}}$ $\quad$$\quad$NO2 + Cl2 → NO2Cl + Cl $\quad$slow $\quad$$\quad$NO2 + Cl → NO2Cl $\quad$$\quad$fast

A) Rate = k[NO2][Cl2] B) Rate = k[NO2]2[Cl2] C) Rate = k[NO2][Cl] D) Rate = k[NO2Cl][Cl] E) Rate = k[NO2Cl]2 A) Rate = k[NO2][Cl2] B) Rate = k[NO2]2[Cl2] C) Rate = k[NO2][Cl] D) Rate = k[NO2Cl][Cl] E) Rate = k[NO2Cl]2

Determine the missing initial rate for a reaction with an order of $\frac{2}{5}$ given the following information: \[\begin{array} { l | l } { [ \mathrm { A } ] \left( \mathrm { mol } \mathrm { L } ^ { - 1 } \right) } & \text { Initial Rate } \left( \mathrm { mol } \mathrm { L } ^ { - 1 } \mathrm {~s} ^ { - 1 } \right) \\ \hline 9.74 \times 10 ^ { - 5 } & 4.6 \times 10 ^ { - 3 } \\ 6.83 \times 10 ^ { - 4 } & ? \\ 9.74 \times 10 ^ { - 4 } & 1.2 \times 10 ^ { - 2 } \end{array}\]

A) 6.0 × 10-3 mol L-1 s-1 B) 2.8 × 10-2 mol L-1 s-1 C) 7.3 × 10-3 mol L-1 s-1 D) 9.74 × 10-3 mol L-1 s-1 E) 1.0 × 10-2 mol L-1 s-1 A) 6.0 × 10-3 mol L-1 s-1 B) 2.8 × 10-2 mol L-1 s-1 C) 7.3 × 10-3 mol L-1 s-1 D) 9.74 × 10-3 mol L-1 s-1 E) 1.0 × 10-2 mol L-1 s-1

For a reaction that follows the general rate law,Rate = k[A][B]2,what will happen to the rate of reaction if the concentration of A is increased by a factor of 5.00?

A) The rate will decrease by a factor of 1/25.0. B) The rate will decrease by a factor of 1/5.00. C) The rate will increase by a factor of 5.00. D) The rate will increase by a factor of 25.0. A) The rate will decrease by a factor of 1/25.0. B) The rate will decrease by a factor of 1/5.00. C) The rate will increase by a factor of 5.00. D) The rate will increase by a factor of 25.0.

If the activation energy for a given compound is found to be 103 kJ mol-1 with a frequency factor of 4.0 × 1013 s-1,what is the rate constant for this reaction at 398 K?

A) 1.2 s-1 B) 8.2 s-1 C) 3.9 × 1010 s-1 D) 1.7 × 1010 s-1 E) 2.5 × 107 s-1 A) 1.2 s-1 B) 8.2 s-1 C) 3.9 × 1010 s-1 D) 1.7 × 1010 s-1 E) 2.5 × 107 s-1

Exam 13: Chemical Kinetics

The elementary reaction $2 \mathrm { NO } _ { 2 }$ (g)? 2NO(g)+ $\mathrm { O } _ { 2 }$ (g) is second order in $\mathrm { NO } _ { 2 }$ and the rate constant at 515 K is 1.64 × 10^-2 $\mathrm { L } \mathrm { mol } ^ { - 1 }$ $s ^ { - 1 }$ .The reaction half-life at this temperature when $\left[ \mathrm { NO } _ { 2 } \right] _ { 0 }$ = 0.45 mol L^-1 is ________ s.

(Multiple Choice)

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Question 21

What function do enzymes serve?

(Essay)

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Question 22

What data should be plotted to show that experimental concentration data fit a first-order reaction?

(Multiple Choice)

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Question 23

Determine the rate law and the value of k for the following reaction using the data provided: S₂O₈²^-(aq)+ 3 I^- (aq)→ 2 SO₄²^- (g)+ I₃^- (aq) $\quad$ [S₂O₈²^-]_i(M) $\quad$ [I^-]_i (M)Initial Rate (M^-1s^-1) $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ 0.30 $\quad$ $\quad$ 0.42 $\quad$ $\quad$ $\quad$ 4.54 $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ 0.44 $\quad$ $\quad$ 0.42 $\quad$ $\quad$ $\quad$ 6.65 $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ 0.44 $\quad$ $\quad$ 0.21 $\quad$ $\quad$ $\quad$ 3.33

(Multiple Choice)

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Question 24

Which of the following is the characteristic of a second-order reaction having only one reactant?

(Multiple Choice)

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Question 25

What is a catalyst and what function does it serve?

(Essay)

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Question 26

Define half-life.

(Essay)

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Question 27

Which rate law is termolecular?

(Multiple Choice)

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Question 28

Which of the following is the characteristic of a first-order reaction having only one reactant?

(Multiple Choice)

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Question 29

Which rate law is bimolecular?

(Multiple Choice)

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Question 30

Given the following proposed mechanism,predict the rate law for the overall reaction. $\quad$ $\quad$ 2NO₂ + Cl₂ → 2NO₂Cl (overall reaction) $\quad$ $\quad$ $\underline{\text{Mechanism}}$ $\quad$ $\quad$ NO₂ + Cl₂ → NO₂Cl + Cl $\quad$ slow $\quad$ $\quad$ NO₂ + Cl → NO₂Cl $\quad$ $\quad$ fast

(Multiple Choice)

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Question 31

The rate of disappearance of HBr in the gas phase reaction 2HBr(g)? $\mathrm { H } _ { 2 }$ (g)+ $\mathrm { Br } _ { 2 }$ (g) Is 0.311 mol L^-1 $s ^ { - 1 }$ at 150 °C.The rate of appearance of $\mathrm { Br } _ { 2 }$ is ________ mol L^-1 $s ^ { - 1 }$ .

(Multiple Choice)

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Question 32

In aqueous solution,hypobromite ion,BrO^-,reacts to produce bromate ion,BrO₃^-,and bromide ion,Br^-,according to the following chemical equation: $3 \mathrm { BrO } ^ { - } ( a q ) \rightarrow \mathrm { BrO } _ { 3 } ^ { - } ( a q ) + 2 \mathrm { Br } ^ { - } ( a q )$ A plot of 1/[BrO^-] vs.time is linear and the slope is equal to 0.056 L mol^-1s^-1.If the initial concentration of BrO^- is 0.80 mol L^-1,how long will it take one-half of the BrO^-ion to react?

(Multiple Choice)

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Question 33

Determine the missing initial rate for a reaction with an order of $\frac{2}{5}$ given the following information: [] Initial Rate 9.74\times1 4.6\times1 6.83\times1 ? 9.74\times1 1.2\times1

(Multiple Choice)

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Question 34

The first-order reaction,SO₂Cl₂ → SO₂ + Cl₂,has a rate constant equal to 2.20 × 10^-5 s^-1 at 593 K.What percentage of the initial amount of SO₂Cl₂ will remain after 6.00 hours?

(Multiple Choice)

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Question 35

For a reaction that follows the general rate law,Rate = k[A][B]²,what will happen to the rate of reaction if the concentration of A is increased by a factor of 5.00?

(Multiple Choice)

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Question 36

What is the overall order of the following reaction,given the rate law? X + 2 Y → 4 Z Rate = k[X][Y]

(Multiple Choice)

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Question 37

If the activation energy for a given compound is found to be 103 kJ mol^-1 with a frequency factor of 4.0 × 10¹³ s^-1,what is the rate constant for this reaction at 398 K?

(Multiple Choice)

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Question 38

What is the overall order of the following reaction,given the rate law? 2 X + 3 Y → 2 Z Rate = k[X]¹[Y]²

(Multiple Choice)

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Question 39

What is the unit of k in the following rate law? Rate = k[X]²

(Multiple Choice)

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Question 40

Showing 21 - 40 of 156

Exam 13: Chemical Kinetics

What function do enzymes serve?

What data should be plotted to show that experimental concentration data fit a first-order reaction?

Which of the following is the characteristic of a second-order reaction having only one reactant?

What is a catalyst and what function does it serve?

Define half-life.

Which rate law is termolecular?

Which of the following is the characteristic of a first-order reaction having only one reactant?

Which rate law is bimolecular?

Given the following proposed mechanism,predict the rate law for the overall reaction. \quad\quad 2NO2 + Cl2 → 2NO2Cl (overall reaction) \quad\quadMechanism‾\underline{\text{Mechanism}}Mechanism​ \quad\quad NO2 + Cl2 → NO2Cl + Cl \quad slow \quad\quad NO2 + Cl → NO2Cl \quad\quad fast

The rate of disappearance of HBr in the gas phase reaction 2HBr(g)? H2\mathrm { H } _ { 2 }H2​ (g)+ Br2\mathrm { Br } _ { 2 }Br2​ (g) Is 0.311 mol L-1 s−1s ^ { - 1 }s−1 at 150 °C.The rate of appearance of Br2\mathrm { Br } _ { 2 }Br2​ is ________ mol L-1 s−1s ^ { - 1 }s−1 .

Determine the missing initial rate for a reaction with an order of 25\frac{2}{5}52​ given the following information: [] Initial Rate 9.74\times1 4.6\times1 6.83\times1 ? 9.74\times1 1.2\times1

The first-order reaction,SO2Cl2 → SO2 + Cl2,has a rate constant equal to 2.20 × 10-5 s-1 at 593 K.What percentage of the initial amount of SO2Cl2 will remain after 6.00 hours?

For a reaction that follows the general rate law,Rate = k[A][B]2,what will happen to the rate of reaction if the concentration of A is increased by a factor of 5.00?

What is the overall order of the following reaction,given the rate law? X + 2 Y → 4 Z Rate = k[X][Y]

If the activation energy for a given compound is found to be 103 kJ mol-1 with a frequency factor of 4.0 × 1013 s-1,what is the rate constant for this reaction at 398 K?

What is the overall order of the following reaction,given the rate law? 2 X + 3 Y → 2 Z Rate = k[X]1[Y]2

What is the unit of k in the following rate law? Rate = k[X]2

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The rate of disappearance of HBr in the gas phase reaction 2HBr(g)? $\mathrm { H } _ { 2 }$ (g)+ $\mathrm { Br } _ { 2 }$ (g) Is 0.311 mol L^-1 $s ^ { - 1 }$ at 150 °C.The rate of appearance of $\mathrm { Br } _ { 2 }$ is ________ mol L^-1 $s ^ { - 1 }$ .

Determine the missing initial rate for a reaction with an order of $\frac{2}{5}$ given the following information: [] Initial Rate 9.74\times1 4.6\times1 6.83\times1 ? 9.74\times1 1.2\times1

The first-order reaction,SO₂Cl₂ → SO₂ + Cl₂,has a rate constant equal to 2.20 × 10^-5 s^-1 at 593 K.What percentage of the initial amount of SO₂Cl₂ will remain after 6.00 hours?

For a reaction that follows the general rate law,Rate = k[A][B]²,what will happen to the rate of reaction if the concentration of A is increased by a factor of 5.00?

If the activation energy for a given compound is found to be 103 kJ mol^-1 with a frequency factor of 4.0 × 10¹³ s^-1,what is the rate constant for this reaction at 398 K?

What is the overall order of the following reaction,given the rate law? 2 X + 3 Y → 2 Z Rate = k[X]¹[Y]²

What is the unit of k in the following rate law? Rate = k[X]²