Calculate AH and AUf for the formation of silane, SiH4(g), from its elements at 298 K, if 250 cm³ of the gaseous com- pound at T = 298 K and P = 0.658 atm is burned in a constant-volume gas calorimeter in an excess of oxygen and causes the evolution of 9.757 kJ of heat. The combus- tion reaction is SiH,(g) + 2 O2(g)→ SiO2(s, quartz) + 2 H,O(€) and the formation of silane from its elements is Si(s) + 2 H2(g) - · SİH4(g)

Calculate AH and AUf for the formation of silane, SiH4(g), from its elements at 298 K, if 250 cm³ of the gaseous com- pound at T = 298 K and P = 0.658 atm is burned in a constant-volume gas calorimeter in an excess of oxygen and causes the evolution of 9.757 kJ of heat. The combus- tion reaction is SiH,(g) + 2 O2(g)→ SiO2(s, quartz) + 2 H,O(€) and the formation of silane from its elements is Si(s) + 2 H2(g) - · SİH4(g)

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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