Potassium chlorate upon heating melts at 355 °C and decomposes at 480 °C. In the presence of MnOzcs) catalyst, KCI03(5) completely decomposes into Oz(®) and KCl(s). However, MnOz(s) itself does not take part in the overall chemical reaction. In an experiment to determine the gas constant, 1.300 g of pure KCIO3(s) and 100. mg of MnO2(s) were mixed in a testube and heated over a bunsen burner. The resulting Oz(g) product was bubbled in distilled water that is at exactly 25 °C (or 298.15 K) and collected in a 100-mL eudiometer. The experiment was done under a barometric pressure of 755 torr. The vapor pressure of water vapor at 25 °C is 23.8 mmHg.

Potassium chlorate upon heating melts at 355 °C and decomposes at 480 °C. In the presence of MnOzcs) catalyst, KCI03(5) completely decomposes into Oz(®) and KCl(s). However, MnOz(s) itself does not take part in the overall chemical reaction. In an experiment to determine the gas constant, 1.300 g of pure KCIO3(s) and 100. mg of MnO2(s) were mixed in a testube and heated over a bunsen burner. The resulting Oz(g) product was bubbled in distilled water that is at exactly 25 °C (or 298.15 K) and collected in a 100-mL eudiometer. The experiment was done under a barometric pressure of 755 torr. The vapor pressure of water vapor at 25 °C is 23.8 mmHg.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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