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Technical data


Reaction rate and activation energy of the acid hydrolysis of ethyl acetate

Item No. P3050201

Principle

In acid solution, ethyl acetate is hydrolysed to equivalent quantities of ethanol and acetic acid according to a pseudo-first order rate law. The alkalimetric determination of the acetic acid formed enables conclusions to be drawn on the temporal concentration of ester.

Benefits

  • Thermostat for precise temperature control
  • Stable and safe construction due to solid stand material

Tasks

  1. Determine the reaction rate constant for the acidolysis of ethyl acetate at two (or more) temperatures.
  2. Calculate the activation energy of the reaction from the temperature dependence of the measured rate constants.

Learning objectives

  • Reaction rate
  • Reaction rate constant
  • Rate law for first and second order reactions
  • Reactions with pseudo order
  • Arrhenius equation
  • Activation energy

Scope of supply

Magnetic stirrer with heater MR Hei-Standard 35753-93 1
Magnetic stirring bar 15 mm, cylindrical 46299-01 1
Magnetic stirring bar 30 mm, cylindrical 46299-02 1
Retort stand, h = 750 mm 37694-00 2
Supp.rod stainl.st.,50cm,M10-thr. 02022-20 1
Right angle boss-head clamp 37697-00 4
Universal clamp 37715-01 4
Burette clamp, roller mount., 2 pl. 37720-00 1
Immersion thermostat Alpha A, 230 V 08493-93 1
External circulation set for thermostat Alpha A 08493-02 1
Bath for thermostat, makrolon 08487-02 1
Immersion probe NiCr-Ni, steel, -50...400 °C 13615-03 1
Burette, lateral stopcock, Schellbach, 50 ml MAU-24022024 1
Volumetric flasks, Boro, various sizes 36552-00 1
Graduated cylinders, Boro, various sizes 36629-00 1
Bulb pipettes, various sizes 36577-00 2
Bulb pipettes, various sizes 36582-00 1
Pipette dish 36589-00 1
Pipettor 36592-00 1
Erlenmeyer flasks, Duran®, wide neck, various sizes 36134-00 2
Erlenmeyer flask, stopper bed, 250 mlSB 29 MAU-EK17082306 2
Rubber stoppers, without bore, various diameters 39258-00 2
Beakers, Boro, low form, various sizes 46054-00 1
Crystallising dishes, Boro, various sizes 46245-00 1
Funnels (glass), Boro, various sizes 34457-00 1
Pasteur pipettes, 250 pcs 36590-00 1
Rubber caps, 10 pcs 39275-03 1
Wash bottle, plastic, 500 ml 33931-00 1
Digital stopwatch, 24 h, 1/100 s and 1 s 24025-00 1
Rubber hose, various diameters 39282-00 2
Hose clip, diam. 8-16 mm, 1 pc. 40996-02 3
Hydrochloric acid, 1.0 mol/l, 1000 ml 48454-70 1
Caustic soda solution, 1.0 m, 1000 ml 48329-70 1
Ethyl acetate 250 ml 30075-25 1
Phenolphthalein, 0,5% soution in ethanol, 100 ml 31715-10 1
Water, distilled 5 l 31246-81 1
Tubing connector, ID 6-10mm 47516-01 2

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com