Given: C₂H₂(g)  2C(graphite) + H₂(g) G° =

question 85

Essay

Given: C₂H₂(g)  2C(graphite) + H₂(g) G° = -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 G° and the apparent stability of the sample.

---

Definitions:

Incremental

Pertaining to an increase or addition, especially in a series of small, regular steps.

Depreciation

A method of allocating the cost of a tangible asset over its useful life.

Amortization

The process of spreading out a loan into a series of fixed payments over time, covering both principal and interest.

Pure Endowment

An insurance policy where the insurer agrees to pay a specified sum of money at the end of a determined period on the condition that the insured is still alive.