Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

Map The equilibrium constant, K, of a certain first If you were going to graphic

ID: 880489 • Letter: M

Question

Map The equilibrium constant, K, of a certain first If you were going to graphically determine the enthalpy, order reaction was measured at two AH, for this reaction, what points would you plot? temperatues, The data is shown in this table. Number Number To avoid rounding point 1 errors, use three T (K) K significant figures in 275 384 the x values and four 625 6.60 significant figures in Number Number the y values. point 2: Determine the rise, run, and slope of the line formed by these points. rise slope Number Number What is the standard enthalpy of this reaction? Number J mol

Explanation / Answer

To plot,

                         x                          y

point 1.      3.64 x 10^-3            1.3455

point 2.      1.6 x 10^-3              1.8871

Rise = 1.8871 - 1.3455 = 0.542

Run = 1.6 x 10^-3 - 3.64 x 10^-3 = -2.01 x 10^-3

slope = rise/run = -265.47532

slope = -deltaHo/R = -265.47532

delta Ho = 2207.162 J/mol