Given: C2H2(g) ⇌ 2C(graphite) + H2(g) ΔG° = -209 kJ A sample of gaseous C2H2 (acetylene, or ethyne) was stored for one year, yet at the end of this period the sample remained unchanged and no graphite or hydrogen gas had been formed. Briefly explain why there is no inconsistency between the sign of ΔG° and the apparent stability of the sample.
Given: C2H2(g) ⇌ 2C(graphite) + H2(g) ΔG° = -209 kJ A sample of gaseous C2H2 (acetylene, or ethyne) was stored for one year, yet at the end of this period the sample remained unchanged and no graphite or hydrogen gas had been formed. Briefly explain why there is no inconsistency between the sign of ΔG° and the apparent stability of the sample.
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section: Chapter Questions
Problem 27PS: The standard free energy change, rG, for the formation of NO(g) from its elements is + 86.58...
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Given:
C2H2(g) ⇌ 2C(graphite) + H2(g) ΔG° = -209 kJ
A sample of gaseous C2H2 (acetylene, or ethyne) was stored for one year, yet at the end of this period the sample remained unchanged and no graphite or hydrogen gas had been formed. Briefly explain why there is no inconsistency between the sign of ΔG° and the apparent stability of the sample.
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