When 1.960 g of titanium is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00 °c to 86.98 °c. in a separate experiment, the heat capacity of the calorimeter is measured to be 9.84 kj/k. the heat of reaction for the combustion of a mole of ti in this calorimeter is kj/mol.

Answer : The heat of combustion of one mole of Ti is -14897.4 kJ/mole

Explanation :

First we have to calculate the heat gained by the calorimeter.

where,

q = heat gained by calorimeter = ?

c = specific heat =

= final temperature =

= initial temperature =

Now put all the given values in the above formula, we get:

Heat released by the reaction = - Heat gained by calorimeter = -609.9 kJ

Now we have to calculate the heat of combustion of one mole of Ti.

To calculate the number of moles of Ti:

Molar mass of Ti = 47.87 g/mole

Number of moles Ti =

Heat of combustion of one mole of Ti =

Therefore, the heat of combustion of one mole of Ti is -14897.4 kJ/mole

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.