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Solved: Synthetic diamonds are made under conditions of high temperature (2000 K) and
Chapter 17, Problem 17.116(choose chapter or problem)
Synthetic diamonds are made under conditions of high temperature (2000 K) and high pressure (\(10^{10} \mathrm{~Pa} ; 10^{5} \mathrm{~atm}\)) in the presence of catalysts. Carbon’s phase diagram is useful for finding the conditions for formation of natural and synthetic diamonds. Along the diamond-graphite line, the two allotropes are in equilibrium.
(a) At point A, what is the sign of \(\Delta H\) for the formation of diamond from graphite? Explain.
(b) Which allotrope is denser? Explain.
Questions & Answers
QUESTION:
Synthetic diamonds are made under conditions of high temperature (2000 K) and high pressure (\(10^{10} \mathrm{~Pa} ; 10^{5} \mathrm{~atm}\)) in the presence of catalysts. Carbon’s phase diagram is useful for finding the conditions for formation of natural and synthetic diamonds. Along the diamond-graphite line, the two allotropes are in equilibrium.
(a) At point A, what is the sign of \(\Delta H\) for the formation of diamond from graphite? Explain.
(b) Which allotrope is denser? Explain.
Step 1 of 3
Carbon exhibits various allotropes, which are different forms or arrangements of carbon atoms. The three most common allotropes of carbon are diamond, graphite, and fullerenes. Other less common allotropes of carbon include carbon nanotubes and graphene. These diverse forms of carbon contribute to its wide range of applications in various industries.