1 Find for the combustion of ethano C6H6Ol to carbon dioxide

1 )Find <?xml:namespace prefix = v ns = \"urn:schemas-microsoft-com:vml\" /> <?xml:namespace prefix = o ns = \"urn:schemas-microsoft-com:office:office\" />for the combustion of ethano( C6H6O)_l to carbon dioxide and liquid water from the following data. The heat capacity of the bomb calorimeter is 34.65 KJ/K and the combustion of 1.749 g of ethanol raises the temperature of the calorimeter from 294.04K to 295.54K .

Solution

The heat generated by the combustion of 1.749 g of ethanol is given by the product of the heat capacity of the calorimeter - also known as the \'calorimeter constant\' - and the temperature rise produced ie

deltaH = 34.65 [kJ/K] x (295.54 - 294.04) [K] = 51.975 kJ