Hess's Law Practice Problems/Exercises
1. Given the following equations and Ho values, determine the heat of reaction (kJ) at 298 K for the reaction:
B2H6 (g) + 6 Cl2 (g) -- 2 BCl3 (g) + 6 HCl (g)
2. Given the following equations and Ho values, determine the heat of reaction (kJ) at 298 K for the reaction:
2 OF2 (g) + 2 S (s) -- SO2 (g) + SF4 (g)
3. Determine Ho/kJ for the following reaction using the listed enthalpies of reaction:
N2H4 (l) + 2 H2O2 -- N2 (g) + 4 H2O (l)
4. Calculate the value of Ho/kJ for the following reaction using the listed thermochemical equations:
P4O10 (g) + 6 PCl5 (g) -- 10 Cl3PO (g)
5. Given the following equations and Ho values, determine the heat of reaction (kJ) at 298 K for the reaction:
2 SO2 (g) + 2 P (s) + 5 Cl2 (g) -- 2 SOCl2 (l) + 2 POCl3 (l)