02.Solving a chemistry problem

02.Solving a chemistry problem

1. Based on the experimental data obtained from measuring the angle of rotation of the polarization plane as a function of time, calculate the rate constant of sucrose inversion.
2. Confirm whether this reaction obeys a first order reaction.
3. Calculate the activation energy of this reaction using the obtained value of the average constant at T = 298 K and the known constant at T = 313 K (k313 = 7.34∙10–2).
4. Initial data: sucrose concentration = 10%; cHCl = 1.5 mol/l.

Measurement No. Time from the beginning of the reaction, min Rotation angle ατ ln (ατ – α∞) k inversion speed [min–1]
1 5 32.70
2 14 28.60
3 27 23.60
4 39 19.50
5 56 14.80
6 63 12.95
7 α∞ = – 10.10

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