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23 Oct 2021

Given information

Ethanol can be made from the fermentation of crops. 

It is used as a fuel additive to gasoline.

The chemical formula for ethanol is  

 

Step-by-step explanation

Step 1.

The balanced chemical equation for the combustion of ethanol is given as:

   

The enthalpy change  for the above chemical reaction is as follows:

    

Where,

'n' is the number of moles of product. 

'm' is the number of moles of reactants.

So, we can write as:

            

 

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