Enthalpy and entropy as driving forces of chemical reactions

Продукт No: P1136300
Principle

The experiment examine the terms enthalpy and entropy as the main forces of chemical reactions. Students perform the reaction of zinc and hydrochloric acid as an example of an exothermic reaction. The heat, which is developed by the raction, is measured with a thermometer. The reaction of barium hydroxide with ammonium rhodanide is performed as an example of an endothermic reaction. This reaction mixture cools down to a temperature of  -20 ° C, which can be monitored with a thermometer.

 




Перечень материалов (вы́писка) Продукт Количество
PHYWE Demo Multimeter ADM 3: current, voltage, resistance, temperature 13840-00 1
Compact Balance, 500 g / 0.1 g 49243-93 1
Support base DEMO 02007-55 1
Thermocouple NiCr-Ni, -50..1100°C 13615-01 1
Round bottom flask, 250 ml, 2-neck, GL25/12, GL18/8 35843-15 1
Magnesium, ribbon, roll, 25 g 30132-00 1
Support clamp for small case 02043-10 1
Protective sleeves f.temp.probe,2 11762-05 1
Supporting blocks,set of 4 02070-00 1
Zinc, granul., 99.5%, 500 g 31998-50 1
Support rod, stainless steel, l = 600 mm, d = 10 mm 02037-00 1
Universal clamp 37715-00 1
Hydrochloric acid 37 %, 1000 ml 30214-70 1
Barium hydroxide 250 g 30034-25 1
Water, distilled 5 l 31246-81 1
Ammonium thiocyanate 50 g 30942-05 1
Right angle boss-head clamp 37697-00 1
Weighing dishes, square shape, 84 x 84 x 24 mm, 25 pcs. 45019-25 1
Graduated cylinder 100 ml 36629-00 1
Spoon, special steel 33398-00 1
Beaker, 150 ml, high-form 46032-00 1
Beaker, 250 ml, high-form 46027-00 1
Wash bottle, plastic, 500 ml 33931-00 1

Литература по данной статье

Название Продукт Язык
Handbuch Lehrerversuche Allgemeine und anorganische Chemie, DEMO advanced Chemie (CT) 01850-01 DEU

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Продукт No: P1136300

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