Question

Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction:
2CO + O2 yields 2CO2
Delta H for this reaction is -135.28 kcal.
If 811.7 kcal is released, how many moles of CO must have reacted?

1). 270.5 mol

2). 40.5 mol

3). 12.0 mol

4). 5.41 mol

5). 16.3 mol

6). 1.35 mol

7). 6.00 mol

Answer 1

135.37 kcal x # mol rxn = 811.7 kcal
# mol rxn = 6 but there are two mols CO in the rxn so 6*2 = 12 mol CO consumed.