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The densities of graphite and diamond at...

The densities of graphite and diamond at `298K` are `2.25` and `3.31gcm^(-3)` , respectively. If the standard free energy difference `(DeltaG^(0))` is equal to `1895Jmol^(-1)` , the pressure at which graphite will be transformed into diamond at `298K` is

A

`9.92xx10^(5)Pa`

B

`11.094xx10^(8)Pa`

C

`10.952xx10^(7)Pa`

D

`9.92xx10^(6)Pa`

Text Solution

Verified by Experts

The correct Answer is:
B
`DletaG=-PDeltaV=` work done
`DeltaV` is the charge in molar volume in the conversion of graphite to diamond.
`DeltaV=(12/3.31-12/2.25)xx10^(-3)L=-1.708xx10^(-3)L`
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