Q Fi seat Enthalpy 0 YouTube ×·V Citation M. × Lab 6 proc, x- 71038/quizzes/1999

Question

Q Fi seat Enthalpy 0 YouTube ×·V Citation M. × Lab 6 proc, x- 71038/quizzes/199923/take/questions/4759758 to the requirement of catalytic converters on automobile engines, cars were a Prior significant source of nitrogen monoxide, an atmospheric pollutant. The high temperatures caused nitrogen and oxygen gas to react to form nitrogen monoxide. A researcher reported the following rate constant values based on temperatures. Calculate the activation energy using the Arrhenius equation. T(K) k(M1s1) 200 1,800 400 400 0 421 kJ/mol O 310 kJ/mol O 343 kJ/mol O 78 kJ/mol O 29 kJ/mol

Explanation / Answer

we have:

T1 = 2200 K

T2 = 2400 K

K1 = 1.8*10^3

K2 = 7.4*10^3

we have below equation to be used:

ln(K2/K1) = (delta Ho/R)*(1/T1 - 1/T2)

ln(7.4*10^3/1.8*10^3) = ( delta Ho/8.314)*(1/2200.0 - 1/2400.0)

1.4137 = (delta Ho/8.314)*(3.788*10^-5)

delta Ho = 310291 J/mol

delta Ho = 310 KJ/mol

Answer: 310 KJ/mol

Feel free to comment below if you have any doubts or if this answer do not work. I will edit it if you let me know

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