An 8.5 g. Of ethanol (C2H5OH) placed in a constant volume calorimeter and the temperature rose to 3.2°C. Find the heat of reaction of the ethanol (MM =46.1 g/mol) in kJ/mol. The heat capacity of the calorimeter plus water is read as 6.38 J/°C

Explanation:

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In this case, since the total heat flow due to the reaction equals the negative of the calorimeter's heat, we can first compute the former as shown below:

Now, since this total heat flow due to the reaction is defined in terms of the heat of reaction and the total reacted moles:

Thus, we compute the moles in 8.5 g of ethanol:

Therefore, the heat of reaction results:

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