Question

A new polymer has been developed which is synthesized using a newly available monomer with a molecular weight of 120 g/mol. The polymerization process is highly exothermic and therefore cooling is required in order to operate the reactor at a constant temperature. In order to determine the cooling requirements you must determine the heat of polymerization using a bomb calorimeter. You begin by standardizing the calorimeter using 11.65 grams of benzoic acid which has a heat of combustion of 6618 cal/gram. This combustion raised the temperature of the water bath by 5.32 °C. The bomb is then filled with 25. grams of monomer and the polymerization initiated. Upon completion of the polymerization, the water bath temperature is increased by 1.04 °C. Determine the heat of polymerization in kJ/mol.

Answer 1

using given standard heat of benzoic acid and given mass and temperature rise data we can find heat of polymerisation

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