If you were going to graphically determine the activation energy of this reactio

Question

If you were going to graphically determine the activation energy of this reaction, what points would you plot? nsider this reaction data A > products Number Number T (K) k (s) 325 825 To avoid rounding errors, use at least three significant fiqures in all values point 1 0.391 0.824 Number Number point 2: Determine the rise, run, and slope of the line formed by these points rise run slope Number Number Number What is the activation energy of this reaction? Number J/ mol Previous Give Up&View; Solution Check Answer NextExit

Explanation / Answer

We need to plot lnK on y axis and 1/T on x axis
K = 0.391
ln K = ln (0.391) = -0.93905
T = 325.0
1/T = 0.00308


point 1 is:
x = 0.00308
y = -0.93905


K = 0.824
ln K = ln (0.824) = -0.19358
T = 825.0
1/T = 0.00121


point 2 is:
x = 0.00121
y = -0.19358


----------------------------------------------------------------------------
rise = (y1-y2) = -0.93905 - -0.19358 = -0.74546
rise = (X1-X2) = 0.00308 - 0.00121 = 0.00186
slope = rise/run
= -0.74546/0.00186
= -399.75452
----------------------------------------------------------------------------
use
slope = - Ea/R
= -399.75452 = -Ea/8.314
Ea = 3324 J/mol

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