Chemistry Practice Problems Hess's Law Practice Problems Solution: From the enthalpies of reaction2 H2(g) + O2(g) → 2...

# Solution: From the enthalpies of reaction2 H2(g) + O2(g) → 2 H2O(g)          Δ = -483.6 kJ             3 O2(g) → 2 O3(g)            Δ = +284.6 kJcalculate the heat of the reaction3 H2(g) + O3(g) → 3 H2O(g)

###### Problem

From the enthalpies of reaction

2 H2(g) + O2(g) → 2 H2O(g)          Δ = -483.6 kJ
3 O2(g) → 2 O3(g)            Δ = +284.6 kJ

calculate the heat of the reaction

3 H2(g) + O3(g) → 3 H2O(g)

Hess's Law

Hess's Law

#### Q. Given the chemical reactions: 2 NO2(g) → N2(g) + 2 O2(g)                  ΔH = −68 kJ N2O4(g) → N2(g) + 2 O2(g)                   ΔH = −10 kJ Deter...

Solved • Mon Aug 08 2016 14:02:22 GMT-0400 (EDT)

Hess's Law

#### Q. Given the dataN2 (g) + O2 (g) → 2 NO (g)            ΔH = +180.7 kJ2 NO (g) + O2 (g) → 2 NO2 (g)      ΔH = -113.1 kJ2 N2O (g) → 2 N2 (g) + O2 (g)      ...

Solved • Wed Jul 13 2016 15:48:53 GMT-0400 (EDT)

Hess's Law

#### Q. From the enthalpies of reactionH2 (g) + F2 (g) → 2 HF (g)          ΔH = -537 kJC (s) + 2 F2 (g) → CF4 (g)          ΔH = -680 kJ2 C (s) + 2 H2 (g) → C2...

Solved • Wed Jul 13 2016 15:47:46 GMT-0400 (EDT)

Hess's Law

#### Q. Calculate the enthalpy change for the reactionP4O6 (s) + 2 O2 (g) → P4O10 (s)given the following enthalpies of reaction:P4 (s) + 3 O2 (g) → P4O6 (s)  ...

Solved • Wed Jul 13 2016 15:42:16 GMT-0400 (EDT)