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(Solved): A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of ...



A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. In the laboratory a student burns a

1.23g

sample of

L

-ascorbic acid

(C_(6)H_(8)O_(6))

in a bomb calorimeter containing

1030g

of water. The temperature increases from

25.80\deg C

to

29.00\deg C

. The heat capacity of water is

4.184(J)/(g*\deg C)

. The molar heat of combustion is

-2340kJ

per mole of L-ascorbic acid.

C_(6)H_(8)O_(6)(s)+5O_(2)(g)->6CO_(2)(g)+4H_(2)O(l)+ Energy


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