Combustion of table sugar produces?

Question

Combustion of table sugar produces CO2(g) and H2O(l). When 1.92 g of table sugar is combusted in a constant volume (bomb) calorimeter, 31.56 kJ of heat is liberated.
(a) Assuming that table sugar is pure sucrose, C12H22O11(s), write the balance equation for the combustion reaction.

Calculate E in kJ/mol C12H22O(s) for the combustion of sucrose.


Calculate H in kJ/mol C12H22O(s) for the combustion of sucrose at 25°C.

Answer 1

(a) C12H22O11(s) + 12O2(g) ==> 12CO2(g) + 11H2O(l)
(b) The molar mass of sucrose is: 342.29648 g/mol.
It is a simple ratio to calculate Delta E:
Delta E = 31.56 kJ *(342.3/1.92) = 5.63x10^3 kJ/mol
(c) When we consider the H2O to be in liquid phase at 25°C, Delta H = Delta E, since the volume change is negligable, since 12 moles of O2 consumed would produce 12 moles of CO2.

Answer 2

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Combustion of table sugar produces?
Combustion of table sugar produces CO2(g) and H2O(l). When 1.92 g of table sugar is combusted in a constant volume (bomb) calorimeter, 31.56 kJ of heat is liberated.
(a) Assuming that table sugar is pure sucrose, C12H22O11(s), write the balance equation for the combustion reaction.

Calculate E...