Question

For the transition
`C` (diamond) `rarr C` (graphite), `Delta H = - 1.5 kJ`
it follows that
A. diamond is more stable than graphite
B. graphite is more stable than diamond
C. both diamond and graphite are equally stabel
D. nothing can be predicted from this reaction

Answer 1

Correct Answer - B
Thermodynamical equation idicates that the reaction (transition) is exothermic, i.e., energy is released out when graphite is formed from diamond. Thus, graphite with lower energy content than diamond is relatively more stable.