Chemistry
29.12.2022 09:01
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The combustion of titanium with oxygen produces titanium dioxide: ti(s) + o2(g)

The combustion of titanium with oxygen produces titanium dioxide: ti(s) + o2(g) → tio2(s) when 2.060 g of titanium is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00 °c to 91.60 °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.
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LanaParrilla
LanaParrilla
4,7(27 marks)

The heat of reaction for the combustion of a mole of Ti in this calorimeter is - 1.52 × 10^4 KJ/mol.

The equation of the reaction is;

Ti(s) + O2(g) → TiO2(s)

From the available information;

Temperature difference(θ) =  91.60 °C -  25.00 °C = 66.6°C

heat capacity of calorimeter (Cp) = 9.84 kJ/K

Heat absorbed by the calorimeter = cpθ = 9.84 × 10^3 J/K × 66.6°C

= 655.3 KJ

Number of moles of Ti = 2.0600 / 47.867 = 0.0430 mol

Enthalpy of combustion in KJ/mol = -(655.3 KJ)/0.0430 mol

= - 1.52 × 10^4 KJ/mol

Learn more: link

teyante7301
teyante7301
4,5(9 marks)

64800 kJ/mol

Explanation:

Heat gained by bomb calorimeter =Q

Heat capacity of bomb calorimeter , C =9.84 kJ/K =

Change in temperature = ΔT= (91.60-25.00) °C = 66.6°C  = 66.6 K

Q=C\times \Delta T=9.84KJ\times 66.6K= 655.34kJ

Let the heat released during reaction be q.

q=m\times c\times \Delta T

Total heat released during reaction is equal to total heat gained by water and bomb calorimeter.

q=Q=655.34kJ

Thus 2.060 g of titanium releases = 655.34 kJ of heat

1 g of titanium releases =\frac{655.34}{2.060}\times 1=1350kJ of heat

1 mole or 48 g of titanium releases =\frac{1350}{1}\times 48=64800kJ of heat

Thus heat given off by the burning titanium, in kJ/mol is 64800.

darwinpinedahn1
darwinpinedahn1
5,0(30 marks)

d i think hope that helps

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