Answer:
the heat of reaction for the combustion of a mole of Ti n this calorimeter is 15478 KJ/mol.
Explanation:
Ti + O₂ ------> TiO₂
Heat produced from the combustion reaction = Heat gained by the calorimeter
Heat gained by the calorimeter = C ΔT
C = Heat capacity of the calorimeter = 9.84 KJ/K = 9840 J/K
ΔT = change in temperature = 68.10 - 25 = 43.10°C = 43.10 K (change in temperature is the same in the two units.
Heat gained by the calorimeter = (9840)(43.10) = 424,104 J = 424.1 KJ
This is equal to heat released on combustion of 1.310 g of Titanium.
Number of moles of 1.310 g of Titanium = (mass/molar mass) = (1.310/47.867) = 0.0274 mole.
0.0274 mole of Titanium released 424,104 J of heat on combustion,
1 mole of Titanium will release (424104×1/0.0274) J of heat on combustion.
Which is equal to 15,478,248.2 J = 15478 KJ/mol of heat.
Hence, the heat of reaction for the combustion of a mole of Ti n this calorimeter is 15478 KJ/mol.
Hope this Helps!!!
