Question

One gram mole of graphite and diamond were burnt to form `CO_(2)` gas:
`C_(("graphite"))+O_(2)(g)toCO_(2)(g)," "DeltaH^(@)=-399.5kJ`
`C_(("diamond"))+O_(2)(g)toCO_(2)(g)," "DeltaH^(@)=-395.4 kJ`
A. graphite is more stable than diamond
B. diamond is more stable than graphite
C. graphite has greater affinity with oxygen
D. diamond has greater affinity with oxygen.

Answer 1

Correct Answer - A
Thermal stability of one isotope is directly proportional to the heat of combustion.