question_answer

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

A)        \[9.92\times {{10}^{6}}\,Pa\]  

B)  \[9.92\times {{10}^{5}}\,P\]

C)  \[9.92\times {{10}^{8}}\,Pa\]

D)       \[9.92\times {{10}^{7}}Pa\]