When 120 mL of CH 6 N 2 was combusted with a stoichiometrically-equivalent amoun

Question

When 120 mL of CH6N2 was combusted with a stoichiometrically-equivalent amount of molecular oxygen in a constant-volume bomb calorimeter, the temperature of the surrounding water bath rose by 3 degrees celsius. The chemical equation representing the combustion is:

2CH6N2 (l) + 5O2 (g) --> 2CO2 (g) + 2N2 (g) + 6H2O (g)

a. suppose the calibrated heat capacity for the calorimeter is 5.0 kJ/C. What is the heat of the reaction (qrxn)?

b. What is the work associated with the combustion (kJ/mol)

c. A pressure gauge indicates that, after the reaction, the pressure inside the reaction chamber reaches 10 atm. What is the partial pressure of N2 (g)? Assume that all of the reactants are consumed, and only the products are present.

Explanation / Answer

When 120 mL of CH 6 N 2 was combusted with a stoichiometrically-equivalent amoun

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