For the gas phase decomposition of bromoethane , the rate constant in s -1 has b

ID: 814818 • Letter: F

Question

For the gas phase decomposition of bromoethane,

the rate constant in s-1 has been determined at several temperatures. When ln k is plotted against the reciprocal of the Kelvin temperature, the resulting linear plot has a slope of -2.63E4 K and a y-intercept of 29.6.

The value of the rate constant for the gas phase decomposition of bromoethane at 721 K is ______ s-1.

(Enter your answer to one significant figure.)

For the gas phase decomposition of bromoethane,

the rate constant has been determined at several temperatures. When ln k in s-1 is plotted against the reciprocal of the Kelvin temperature, the resulting linear plot has a slope of -2.63E4 K and a y-intercept of 29.6.

The activation energy for the gas phase decomposition of bromoethane is ________kJ/mol.

For the gas phase decomposition of bromoethane, the rate constant in s-1 has been determined at several temperatures. When ln k is plotted against the reciprocal of the Kelvin temperature, the resulting linear plot has a slope of -2.63E4 K and a y-intercept of 29.6. The value of the rate constant for the gas phase decomposition of bromoethane at 721 K is (Enter your answer to one significant figure.) For the gas phase decomposition of bromoethane, the rate constant has been determined at several temperatures. When ln k in s^-1 is plotted against the reciprocal of the Kelvin temperature, the resulting linear plot has a slope of -2.63E4 K and a y-intercept of 29.6. The activation energy for the gas phase decomposition of bromoethane is ________kJ/mol.

Explanation / Answer

In the plot of lnk vs 1/T the slope = E/2.303R= -2.63 *104 and intercept = A= 29.6

-E/2.303R=-2.63 *104

E= 2.63 *104 * 2.303 * 8.314 JK-1mol-1 = 50.36 *104 J/ mol

According to Arrhenius equation

k = A e-E/RT

= 29.6 e -(50.36 * J/8.314 JK-1mol-1* 721) = 29.35~ 3 sec-1

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-Eact / RT = -2.63 *104

E= 2.63 *104 * 2.303 * 8.314 JK-1mol-1 = 50.36 *104 J/ mol = 0.050 kJ/mol

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For the gas phase decomposition of bromoethane , the rate constant in s -1 has b

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