When 1.025 g of naphthalene (c10h8) burns in a bomb calorimeter, the temperature rises from 24.25°c to 32.33°c. find δerxn for the combustion of naphthalene. the heat capacity of the calorimeter is 5.11 kj/°c?

Answer : The for the combustion of naphthalene is

Solution : Given,

Mass of naphthalene = 1.025 g

Initial temperature =

Final temperature =

Specific heat capacity of calorimeter =

Molar mass of naphthalene = 128 g/mole

First, we have to calculate the heat absorbed,

Formula used :

Now put all the given values in this formula, we get

Now we have to calculate the moles of naphthalene.

Moles of =

Now we have to calculate the for combustion of naphthalene.

where,

q = heat absorbed

n = number of moles

Now put all the values in this formula, we get

Therefore, the for the combustion of naphthalene is