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CHEMISTRY, M4 EQ-Bank 5

The following reaction represents the conversion of diamond to graphite:

  1. Determine at 298K and state whether the reaction is spontaneous or not.   (3 marks)

  2. What does indicate about the rate of reaction?   (1 mark)

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i.   

→ Reaction is spontaneous.

ii.   Rate of reaction and : 

→ Gibbs Free Energy doesn’t indicate anything about the kinetics of the reaction. While the conversion of diamond to graphite is spontaneous, it occurs over millions of year

Show Worked Solution

→ Standard enthalpy and entropy of elements in their natural state is 0.

 
   
   

 

 
   
   
   

 

 
   
   

 
→ The reaction is spontaneous as .
 

ii.   Rate of reaction and : 

→ Gibbs Free Energy doesn’t indicate anything about the kinetics of the reaction. While the conversion of diamond to graphite is spontaneous, it occurs over millions of year