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# Densities of diamond and graphite are 3.5 and 2.3 g/ mL respectively. Increase of pressure on equilibrium on:C(diamond) $\leftrightharpoons$ C(graphite)A) favours backward reactionB) favours forward reactionC) has no effectD) increases the reaction rate

Last updated date: 16th May 2024
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Hint: We need to use Le Chatelier’s principle of the effect of change of pressure on equilibrium reaction. We know that pressure and volume are inversely proportional based on this Le Chatlier’s principle states that an increase in pressure or volume makes the equilibrium to move in the direction that decreases other quantities.

> Given that the density of graphite is 2.3g/mL this implies that 1gm graphite has a volume of $\dfrac { 1 }{ 2.3 }$mL volume.
> Given that the density of Diamond is 3.5g/mL this implies that 1gm diamond has a volume of $\dfrac { 1 }{ 3.5 }$ mL volume.