What is the rate law that corresponds to the data shown for the reaction 2A + B $\rarr$ C $\begin{array}{cccc} \text { Exp. } & \text { Initial [A] } & \text { Initial [B] } & \text { Initial rate } \\ 1 & 0.015 & 0.022 & 0.125 \\ 2 & 0.030 & 0.044 & 0.500 \\ 3 & 0.060 & 0.044 & 0.500 \\ 4 & 0.060 & 0.066 & 1.125 \end{array}$

A) Rate = k[B]0 B) Rate = k[B]2 C) Rate = k[B]3 D) Rate = k[B] E) None of the above A) Rate = k[B]0 B) Rate = k[B]2 C) Rate = k[B]3 D) Rate = k[B] E) None of the above

The reaction 2NO2(g) $\rarr$ 2NO(g) + O2(g) is suspected to be second order in NO2. Which of the following kinetic plots would be the most useful to confirm whether or not the reaction is second order

A) A plot of [NO2]-1 vs. t B) A plot of ln [NO2]-1 vs. t C) A plot of ln [NO2] vs. t D) A plot of [NO2]2 vs. t E) A plot of [NO2] vs. t A) A plot of [NO2]-1 vs. t B) A plot of ln [NO2]-1 vs. t C) A plot of ln [NO2] vs. t D) A plot of [NO2]2 vs. t E) A plot of [NO2] vs. t

The gas phase reaction of nitrogen dioxide and carbon monoxide was found experimentally to be second-order with respect to NO2, and zero-order with respect to CO below 25$\circ$C. NO2 + CO $\rarr$ NO + CO2 Which one of the following mechanisms is consistent with the observed reaction order

A) NO2 + 2CO $\rarr$ N + 2CO2 fast N + NO2 $\rarr$ 2NO slow B) NO2 + 2CO $\rarr$N + 2CO2 slow N + NO2 $\rarr$ 2NO fast C) NO2 + NO2 $\rarr$ NO3 + NO fast NO3 + CO $\rarr$NO2 + CO2 slow D) NO2 + NO2 $\rarr$ NO3 + NO slow $NO_3 + CO \rarr NO_2 + CO_2$ fast A) NO2 + 2CO $\rarr$ N + 2CO2 fast N + NO2 $\rarr$ 2NO slow B) NO2 + 2CO $\rarr$N + 2CO2 slow N + NO2 $\rarr$ 2NO fast C) NO2 + NO2 $\rarr$ NO3 + NO fast NO3 + CO $\rarr$NO2 + CO2 slow D) NO2 + NO2 $\rarr$ NO3 + NO slow $NO_3 + CO \rarr NO_2 + CO_2$ fast

For the following reaction, $\Delta$P(C6H14)/$\Delta$t was found to be -6.2 * 10-3 atm/s.C6H14(g) $\rarr$ C6H6(g) + 4H2(g) Determine $\Delta$P(H2)/$\Delta$t for this reaction at the same time.

A) 6.2 * 10-3 atm/s B) 1.6 * 10-3 atm/s C) 2.5 * 10-2 atm/s D) -1.6 * 10-3 atm/s E) -2.5 * 10-2 atm/s A) 6.2 * 10-3 atm/s B) 1.6 * 10-3 atm/s C) 2.5 * 10-2 atm/s D) -1.6 * 10-3 atm/s E) -2.5 * 10-2 atm/s

Exam 13: Chemical Kinetics

What is the rate law that corresponds to the data shown for the reaction 2A + B $\rarr$ C Exp. Initial [A] Initial [B] Initial rate 1 0.015 0.022 0.125 2 0.030 0.044 0.500 3 0.060 0.044 0.500 4 0.060 0.066 1.125

(Multiple Choice)

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Question 81

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

(Multiple Choice)

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Question 82

A reaction was experimentally determined to follow the rate law, Rate = k[A] where k = 0.15 s^-1. Starting with [A]_o = 0.225M, how many seconds will it take for [A]_t = 0.0350M

(Multiple Choice)

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Question 83

An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation for this behavior is that as the temperature increases,

(Multiple Choice)

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Question 84

It is possible for the following overall reaction to consist of a one step mechanism: 2A + B + C $\rarr$ products

(True/False)

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Question 85

At 25^$\circ$C, by what factor is the reaction rate increased by a catalyst that reduces the activation energy of the reaction by 1.00 kJ/mol

(Multiple Choice)

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Question 86

A city's water supply is contaminated with a toxin at a concentration of 0.63 mg/L. For the water to be safe for drinking, the concentration of this toxin must be below 1.5 x 10^-3 mg/L. Fortunately, this toxin decomposes to a safe mixture of products by first-order kinetics with a rate constant of 0.27 day^-1. How long will it take for the water to be safe to drink

(Multiple Choice)

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Question 87

For the chemical reaction A $\rarr$ B + C, a plot of [A]_t versus time is found to give a straight line with a negative slope. What is the order of reaction with respect to A

(Multiple Choice)

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Question 88

Which of the following statements is false

(Multiple Choice)

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Question 89

The reaction C₄H₁₀ $\rarr$ C₂H₆ + C₂H₄ has an activation energy (E_a) of 350 kJ/mol, and the E_a of the reverse reaction is 260 kJ/mol. Estimate $\Delta$ H, in kJ/mol, for the reaction as written above.

(Multiple Choice)

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Question 90

It is possible for the following overall reaction to consist of a one step mechanism: 2A $\rarr$ products

(True/False)

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Question 91

The reaction 2NO₂(g) $\rarr$ 2NO(g) + O₂(g) is suspected to be second order in NO₂. Which of the following kinetic plots would be the most useful to confirm whether or not the reaction is second order

(Multiple Choice)

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Question 92

For the first-order reaction, A $\rarr$ products, if half of the initial concentration of A reacts in 20 min, then the remaining half will completely react in the next 20 min.

(True/False)

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Question 93

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 M to 0.32 M at 25^$\circ$C. How long will it take for the reaction to be 90% complete

(Multiple Choice)

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Question 94

A certain reaction A $\rarr$ products is second order with respect toA. If it takes 45 min to reduce the concentration of A from 0.350 M to 0.125 M, what is the rate constant for this reaction

(Multiple Choice)

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Question 95

The gas phase reaction of nitrogen dioxide and carbon monoxide was found experimentally to be second-order with respect to NO₂, and zero-order with respect to CO below 25^$\circ$C. NO₂ + CO $\rarr$ NO + CO₂ Which one of the following mechanisms is consistent with the observed reaction order

(Multiple Choice)

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Question 96

The first-order decomposition, A $\rarr$ products, has a rate constant of 0.150 s^-1. Starting with [A]_o = 0.350 M, how much time is required for [A]_t = 0.125 M

(Multiple Choice)

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Question 97

The reaction A + 2B $\rarr$ products was found to follow the rate law: rate = k[A]²[B]. Predict by what factor the rate of reaction will increase when the concentration of A is doubled, the concentration of B is tripled, and the temperature remains constant.

(Multiple Choice)

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Question 98

At 25^$\circ$C the rate constant for the first-order decomposition of a pesticide solution is 6.40 *10^-3 min^-1. If the starting concentration of pesticide is 0.0314 M, what concentration will remain after 62.0 min at 25^$\circ$C

(Multiple Choice)

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Question 99

For the following reaction, $\Delta$ P(C₆H₁₄)/ $\Delta$ t was found to be -6.2 * 10^-3 atm/s.C₆H₁₄(g) $\rarr$ C₆H₆(g) + 4H₂(g) Determine $\Delta$ P(H₂)/ $\Delta$ t for this reaction at the same time.

(Multiple Choice)

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Question 100

Showing 81 - 100 of 131

Exam 13: Chemical Kinetics

What is the rate law that corresponds to the data shown for the reaction 2A + B →\rarr→ C Exp. Initial [A] Initial [B] Initial rate 1 0.015 0.022 0.125 2 0.030 0.044 0.500 3 0.060 0.044 0.500 4 0.060 0.066 1.125

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

A reaction was experimentally determined to follow the rate law, Rate = k[A] where k = 0.15 s-1. Starting with [A]o = 0.225M, how many seconds will it take for [A]t = 0.0350M

An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation for this behavior is that as the temperature increases,

It is possible for the following overall reaction to consist of a one step mechanism: 2A + B + C →\rarr→ products

At 25 ∘\circ∘ C, by what factor is the reaction rate increased by a catalyst that reduces the activation energy of the reaction by 1.00 kJ/mol

For the chemical reaction A →\rarr→ B + C, a plot of [A]t versus time is found to give a straight line with a negative slope. What is the order of reaction with respect to A

Which of the following statements is false

The reaction C4H10 →\rarr→ C2H6 + C2H4 has an activation energy (Ea) of 350 kJ/mol, and the Ea of the reverse reaction is 260 kJ/mol. Estimate Δ\DeltaΔ H, in kJ/mol, for the reaction as written above.

It is possible for the following overall reaction to consist of a one step mechanism: 2A →\rarr→ products

The reaction 2NO2(g) →\rarr→ 2NO(g) + O2(g) is suspected to be second order in NO2. Which of the following kinetic plots would be the most useful to confirm whether or not the reaction is second order

For the first-order reaction, A →\rarr→ products, if half of the initial concentration of A reacts in 20 min, then the remaining half will completely react in the next 20 min.

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 M to 0.32 M at 25 ∘\circ∘ C. How long will it take for the reaction to be 90% complete

A certain reaction A →\rarr→ products is second order with respect toA. If it takes 45 min to reduce the concentration of A from 0.350 M to 0.125 M, what is the rate constant for this reaction

The first-order decomposition, A →\rarr→ products, has a rate constant of 0.150 s-1. Starting with [A]o = 0.350 M, how much time is required for [A]t = 0.125 M

The reaction A + 2B →\rarr→ products was found to follow the rate law: rate = k[A]2[B]. Predict by what factor the rate of reaction will increase when the concentration of A is doubled, the concentration of B is tripled, and the temperature remains constant.

At 25 ∘\circ∘ C the rate constant for the first-order decomposition of a pesticide solution is 6.40 *10-3 min-1. If the starting concentration of pesticide is 0.0314 M, what concentration will remain after 62.0 min at 25 ∘\circ∘ C

For the following reaction, Δ\DeltaΔ P(C6H14)/ Δ\DeltaΔ t was found to be -6.2 * 10-3 atm/s.C6H14(g) →\rarr→ C6H6(g) + 4H2(g) Determine Δ\DeltaΔ P(H2)/ Δ\DeltaΔ t for this reaction at the same time.

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What is the rate law that corresponds to the data shown for the reaction 2A + B $\rarr$ C Exp. Initial [A] Initial [B] Initial rate 1 0.015 0.022 0.125 2 0.030 0.044 0.500 3 0.060 0.044 0.500 4 0.060 0.066 1.125

A reaction was experimentally determined to follow the rate law, Rate = k[A] where k = 0.15 s^-1. Starting with [A]_o = 0.225M, how many seconds will it take for [A]_t = 0.0350M

It is possible for the following overall reaction to consist of a one step mechanism: 2A + B + C $\rarr$ products

At 25^$\circ$C, by what factor is the reaction rate increased by a catalyst that reduces the activation energy of the reaction by 1.00 kJ/mol

For the chemical reaction A $\rarr$ B + C, a plot of [A]_t versus time is found to give a straight line with a negative slope. What is the order of reaction with respect to A

The reaction C₄H₁₀ $\rarr$ C₂H₆ + C₂H₄ has an activation energy (E_a) of 350 kJ/mol, and the E_a of the reverse reaction is 260 kJ/mol. Estimate $\Delta$ H, in kJ/mol, for the reaction as written above.

It is possible for the following overall reaction to consist of a one step mechanism: 2A $\rarr$ products

The reaction 2NO₂(g) $\rarr$ 2NO(g) + O₂(g) is suspected to be second order in NO₂. Which of the following kinetic plots would be the most useful to confirm whether or not the reaction is second order

For the first-order reaction, A $\rarr$ products, if half of the initial concentration of A reacts in 20 min, then the remaining half will completely react in the next 20 min.

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 M to 0.32 M at 25^$\circ$C. How long will it take for the reaction to be 90% complete

A certain reaction A $\rarr$ products is second order with respect toA. If it takes 45 min to reduce the concentration of A from 0.350 M to 0.125 M, what is the rate constant for this reaction

The first-order decomposition, A $\rarr$ products, has a rate constant of 0.150 s^-1. Starting with [A]_o = 0.350 M, how much time is required for [A]_t = 0.125 M

The reaction A + 2B $\rarr$ products was found to follow the rate law: rate = k[A]²[B]. Predict by what factor the rate of reaction will increase when the concentration of A is doubled, the concentration of B is tripled, and the temperature remains constant.

At 25^$\circ$C the rate constant for the first-order decomposition of a pesticide solution is 6.40 *10^-3 min^-1. If the starting concentration of pesticide is 0.0314 M, what concentration will remain after 62.0 min at 25^$\circ$C

For the following reaction, $\Delta$ P(C₆H₁₄)/ $\Delta$ t was found to be -6.2 * 10^-3 atm/s.C₆H₁₄(g) $\rarr$ C₆H₆(g) + 4H₂(g) Determine $\Delta$ P(H₂)/ $\Delta$ t for this reaction at the same time.