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The Thermal Decomposition of Acetaldehyde, CH3CHO → CH4 + CO

Question 38

Multiple Choice

The thermal decomposition of acetaldehyde, CH3CHO → CH4 + CO, is a second-order reaction. The following data were obtained at 518°C. The thermal decomposition of acetaldehyde, CH<sub>3</sub>CHO → CH<sub>4</sub> + CO, is a second-order reaction. The following data were obtained at 518°C.   Calculate the rate constant for the decomposition of acetaldehyde from the above data. A)  2.2 × 10<sup>-3</sup> s<sup>-1</sup> B)  0.70 mmHg • s<sup>-1</sup> C)  2.2 × 10<sup>-3</sup> /mmHg<sup> </sup>• s<sup>-1</sup> D)  6.7 × 10<sup>-6</sup> /mmHg<sup> </sup>• s<sup>-1</sup> E)  5.2 × 10<sup>-5</sup> /mmHg<sup> </sup>• s<sup>-1</sup> Calculate the rate constant for the decomposition of acetaldehyde from the above data.


A) 2.2 × 10-3 s-1
B) 0.70 mmHg • s-1
C) 2.2 × 10-3 /mmHg • s-1
D) 6.7 × 10-6 /mmHg • s-1
E) 5.2 × 10-5 /mmHg • s-1

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