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The Following Questions Refer to the Reaction 2A2 + B2

Question 81

Multiple Choice

The following questions refer to the reaction 2A2 + B2 → 2C. The mechanism below has been proposed: The following questions refer to the reaction 2A<sub>2</sub> + B<sub>2</sub> → 2C. The mechanism below has been proposed:   -When ethyl chloride, CH<sub>3</sub>CH<sub>2</sub>Cl, is dissolved in 1.0 M NaOH, it is converted into ethanol, CH<sub>3</sub>CH<sub>2</sub>OH, by the reaction CH<sub>3</sub>CH<sub>2</sub>Cl + OH<sup>-</sup> → CH<sub>3</sub>CH<sub>2</sub>OH + Cl<sup>-</sup> At 25°C the reaction is first order in CH<sub>3</sub>CH<sub>2</sub>Cl, and the rate constant is 1.0 × 10<sup>-3</sup> s<sup>-1</sup>. If the activation parameters are A = 3.4 × 10<sup>14</sup> s<sup>-1</sup> and E<sub>a</sub> = 100.0 kJ/mol, what will the rate constant be at 36°C? (R = 8.314 J/mol • K)  A)  4.9× 10<sup>14</sup> s<sup>-1</sup> B)  1.4× 10<sup>-3</sup> s<sup>-1</sup> C)  6.9× 10<sup>2</sup> s<sup>-1</sup> D)  9.3× 10<sup>-3</sup> s<sup>-1</sup> E)  4.2× 10<sup>-3</sup> s<sup>-1</sup>
-When ethyl chloride, CH3CH2Cl, is dissolved in 1.0 M NaOH, it is converted into ethanol, CH3CH2OH, by the reaction
CH3CH2Cl + OH- → CH3CH2OH + Cl-
At 25°C the reaction is first order in CH3CH2Cl, and the rate constant is 1.0 × 10-3 s-1. If the activation parameters are A = 3.4 × 1014 s-1 and Ea = 100.0 kJ/mol, what will the rate constant be at 36°C? (R = 8.314 J/mol • K)


A) 4.9× 1014 s-1
B) 1.4× 10-3 s-1
C) 6.9× 102 s-1
D) 9.3× 10-3 s-1
E) 4.2× 10-3 s-1

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