Gradebook O 5/1/2017 11:55 PM A 25.6/100 Print Calculator Periodic Table Questio

Question

Gradebook O 5/1/2017 11:55 PM A 25.6/100 Print Calculator Periodic Table Question 25 of 30 Map Sapling Learning Consider this reaction data: If you were going to graphically determine the activation energy of this reaction, what points would you plot? A e products Number Number T (K) k (s-1) O point 1: To avoid rounding 325 0398 errors, use at least 575 0.677 three significant Number Number figures in all values. point 2: Determine the rise, run, and slope of the line formed by these points slope rise run Number Number Number What is the activation energy of this reaction? Number J mol A Previous Give Up & View solution Check Answer Next Exit Hint

Explanation / Answer

We need to plot lnK on y axis and 1/T on x axis

K = 0.398

ln K = ln (0.398) = -0.9213

T = 325.0

1/T = 0.00308

point 1 is:

x = 0.00308

y = -0.9213

K = 0.677

ln K = ln (0.677) = -0.39008

T = 575.0

1/T = 0.00174

point 2 is:

x = 0.00174

y = -0.39008

----------------------------------------------------------------------------

rise = (y1-y2) = -0.9213 - -0.39008 = -0.53122

rise = (X1-X2) = 0.00308 - 0.00174 = 0.00134

slope = rise/run

= -0.53122/0.00134

= -397.0864

----------------------------------------------------------------------------

use

slope = - Ea/R

= -397.0864 = -Ea/8.314

Ea = 3301.38 J/mol

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.