Synthetic diamonds are made under conditions of high temperature (2000 K) and high pressure (1010 Pa; 105 atm) in the presence of catalysts. Carbon’s phase diagram is useful for finding the condition 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 ΔH for the formation of diamond from graphite? Explain.
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.