15. + -10.1 points 0/4 Submissions Used Calculate the standard enthalpy of formation of gaseous nitrogen...

Question

Question

15. + -10.1 points 0/4 Submissions Used Calculate the standard enthalpy of formation of gaseous nitrogen monoxide (NO) using

Answer 1

Answer #1

$\Delta$ H = 90.8 kJ

Explanation

Reaction 1 : N₂ (g) + 3 H₂ (g) $\rightleftharpoons$ 2 NH₃ (g) : $\Delta$ H₁ = -92.4 kJ

Reaction 2 : 4 NO (g) + 6 H₂O (l) $\rightleftharpoons$ 4 NH₃ (g) + 5 O₂ (g) : $\Delta$ H₂ = 1167.1 kJ

Reaction 3 : 2 H₂O (l) $\rightleftharpoons$ 2 H₂ (g) + O₂ (g) : $\Delta$ H₃ = 571.7 kJ

Desired reaction : 1/2 N₂ (g) + 1/2 O₂ (g) $\rightleftharpoons$ NO (g)

Consider the operation : (2 * R₁ - R₂ + 3 * R₃) / 4

This operation gives the desired reaction.

$\Delta$ H = (2 * $\Delta$ H₁ - $\Delta$ H₂ + 3 * $\Delta$ H₃) / 4

$\Delta$ H = [2 * (-92.4 kJ) - (1167.1 kJ) + 3 * (571.7 kJ)] / 4

$\Delta$ H = (-184.8 kJ - 1167.1 kJ + 1715.1 kJ) / 4

$\Delta$ H = (363.2 kJ) / 4

$\Delta$ H = 90.8 kJ

Answer 2

Similar Homework Help Questions

15. # -/0.1 points 0/4 Submissions Used Calculate the standard enthalpy of formation of liquid water...

15. # -/0.1 points 0/4 Submissions Used Calculate the standard enthalpy of formation of liquid water (H2O) using the following thermochemical information: N205(9) + H2O(1) = 2 HNO3(0) 2 N205(g) = 2 N2(g) + 5 O2(g) N2(g) + 3 O2(g) + H2(g) = 2 HNO3(1) AH = -92.0 kj AH = -59.3 kj AH = -348.2 kJ AH = kJ
Calculate the standard enthalpy of formation of gaseous acetylene (C2H2) using the following thermochemical information: 2...

Calculate the standard enthalpy of formation of gaseous acetylene (C2H2) using the following thermochemical information: 2 C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l) H = -2599.3 kJ CO2(g) C(s) + O2(g) H = +393.5 kJ 2 H2O(l) 2 H2(g) + O2(g) H = +571.7 kJ H = kJ
Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical informat...

Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical information: 2 C(s) + H2(g) C2H2(g) H = +226.8 kJ 2 C2H2(g) + 5 O2(g) 4 CO2(g) + 2 H2O(l) H = -2599.3 kJ 2 H2O(l) 2 H2(g) + O2(g) H = +571.7 kJ H = _______kJ

Calculate the standard enthalpy of formation of gaseous methane (CH4) using the following thermochemical information: CO2(g)...

Calculate the standard enthalpy of formation of gaseous methane (CH4) using the following thermochemical information: CO2(g) + 2 H2O(l) CH4(g) + 2 O2(g) H = +890.4 kJ CO2(g) C(s) + O2(g) H = +393.5 kJ 2 H2O(l) 2 H2(g) + O2(g) H = +571.7 kJ
Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information:...

Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information: Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information: H2(g)F2(g) 2 HF(g) 2 CF4(g)4 HF(g) C2H4(g) +6 F2(g) C2H4(g)2 C(s) 2 H2(g) AH -537 kJ AH 2486.3 kJ AH -52.3 kJ ΔΗ - kJ
Using Hess's Law to Calculate a Standard Enthalpy of Formation On the Solution Calorimetry Lab Report...

Using Hess's Law to Calculate a Standard Enthalpy of Formation On the Solution Calorimetry Lab Report Form, vou will be asked to calculate a standard enthalpy of formation for magnesium oxide based on your experimental results. Below is an example of how to do this type of calculation. Calculate the standard enthalpy of formation of gaseous diborane (B2H6) using the following thermochemical equations: 4 B(s) + 3 O2(g)-> 2 B2O3(s) 2 H2(g) + O2(g) > 2 H20(0) B2H6(8) +3 O2(g)...

Calculate the standard enthalpy of formation of liquid water (H2O) using the following thermochemical information: 2...

Calculate the standard enthalpy of formation of liquid water (H2O) using the following thermochemical information: 2 HNO3(l) N2O5(g) + H2O(l) H = +92.0 kJ 2 N2(g) + 5 O2(g) 2 N2O5(g) H = +59.3 kJ N2(g) + 3 O2(g) + H2(g) 2 HNO3(l) H = -348.2 kJ
Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical information:...

Calculate the standard enthalpy of formation of gaseous carbon dioxide (CO2) using the following thermochemical information: 2 Ca(s) + O2(g) = 2 Cao(s) CaO(s) + CO2(g) = CaCO3(s) 2 C(s) + 2 Ca(s) + 3 O2(g) = 2 CaCO3(s) AH = -1270.2 kJ AH = -178.3 kJ AH = -2413.8 kJ AH = kJ
Calculate the standard enthalpy of formation of gaseous sulfur dioxide (S02) using the following thermochemical information:...

Calculate the standard enthalpy of formation of gaseous sulfur dioxide (S02) using the following thermochemical information: 2 Mgo(s) = 2 Mg(s) + O2(g) Mg(s) + S(s) = MgS(s) Mgs(s) + 2 Mgo(s) = 3 Mg(s) + SO2(g) AH = +1203.4 k) AH = -598.0 kJ AH = +1504.6 kJ AH = k]

Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information:...

Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information: 2 HF(g) H2(g) + F2(g) H = +537 kJ 2 CF4(g) + 4 HF(g) C2H4(g) + 6 F2(g) H = +2486.3 kJ C2H4(g) 2 C(s) + 2 H2(g) H = -52.3 kJ Calculate the standard enthalpy of formation of gaseous carbon tetrafluoride (CF4) using the following thermochemical information: 2 HF(g) H2(g) + F2(g) H = +537 kJ 2 CF4(g) + 4 HF(g) C2H4(g) +...