Chemical Thermodynamics Question 153

Question: The densities of graphite and diamond at 298 K are 2.25 and 3.31 g cm-3, respectively. If the standard free energy difference $ (\Delta G^{o}) $ is equal to 1895 J $ mo{{l}^{-1}} $ , the pressure at which graphite will be transformed diamond at 298 K is [CBSE PMT 2003]

Options:

A) $ 9.92\times 10^{5}Pa $

B) $ 9.92\times 10^{8}Pa $

C) $ 9.92\times 10^{7}Pa $

D) $ 9.92\times 10^{6}Pa $

Show Answer

Answer:

Correct Answer: B

Solution:

Only high pressure favours the conversion.



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