Homework Help: Chemistry

Posted by John on Monday, February 11, 2013 at 10:41pm.

Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. The heat of combustion of naphthalene is -40.1 kJ/g. When 0.8210 g of naphthalene was burned in a calorimeter containing 1,000. g of water, a temperature rise of 4.21Â°C was observed. What is the heat capacity of the bomb calorimeter excluding the water?

Chemistry - DrBob222, Monday, February 11, 2013 at 11:00pm
40,100 J/g x 0.8210 g = q
q = [mass H2O x specific heat H2O x delta T] + Ccal x delta T.
Solve for Ccal.

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