Using Hess's Law to Calculate a Standard Enthalpy of Formation On the Solution Calorimetry Lab Report...
Calculate the standard enthalpy of formation of liquid water
(H2O) using the following thermochemical
information:
2
B2O3(s) 4 B(s) + 3 O2(g)
H = +2509.1 kJ
B2O3(s)
+ 3 H2O(l) B2H6(g) + 3
O2(g)
H = +2147.5 kJ
2 B(s) + 3 H2(g)
B2H6(g)
H = +35.4 kJ
H = ______ kJ
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
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
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 solid calcium
carbonate (CaCO3) using the following thermochemical
information:
Calculate the standard enthalpy of formation of solid calcium carbonate (CaCo3) using the following thermochemical information: 2 Cao(s) 2 Ca(s) O2(g) AH 1270.2 kJ C(s) O2 (g) CO2 (g) AH 393.5 kJ AH 178.3 kJ CaO(s) CO2 (g) CaCO3(s) kJ AH
Use Hess's law to calculate standard enthalpy change of formation at 298K for carbon (iv) sulphide compound, Cs2. Given that: Cs2(s) + 3O2(g) - Co2(g) + 2So2(g) ∆H°298= -1113KJ/mol C(s) + O2(g) - Co2(g). ∆H°298 = -407 KJ/mol S(s) + O2(g) - So2(g) ∆H°298 = -298 KJ/mol
a) Calculate the enthalpy of the reaction 2NO(g)+O2(g)→2NO2(g) given the following reactions and enthalpies of formation: 12N2(g)+O2(g)→NO2(g), ΔfH∘A=33.2 kJ mol−1 12N2(g)+12O2(g)→NO(g), ΔfH∘B=90.2 kJ mol−1 Express your answer with the appropriate units. b) Calculate the enthalpy of the reaction 4B(s)+3O2(g)→2B2O3(s) given the following pertinent information: B2O3(s)+3H2O(g)→3O2(g)+B2H6(g), ΔrH∘A=+2035 kJ mol−1 2B(s)+3H2(g)→B2H6(g), ΔrH∘B=+36 kJ mol−1 H2(g)+12O2(g)→H2O(l), ΔrH∘C=−285 kJ mol−1 H2O(l)→H2O(g), ΔrH∘D=+44 kJ mol−1
15. + -10.1 points 0/4 Submissions Used Calculate the standard enthalpy of formation of gaseous nitrogen monoxide (NO) using the following thermochemical information: N2(g) + 3 H2(g) = 2 NH3(9) 4 NO(g) + 6 H2O(l) = 4 NH3(g) + 5 O2(9) 2 H2O(1) = 2 H2(g) + O2(9) AH = -92.4 kJ AH = +1167.1 kJ AH = +571.7 kJ AH =
Calculate the standard enthalpy of formation of CS2() given that AH=-393.5 kJ/mol AHo = -296.4 kj/mol a. C(s) + O2(g) CO2lg) b. S(s) +O2(g). SO2(g) AH = -1073.6 kj/mol C. CS2(I)+302(g) Co2lg) + 2S02(B)
Hess's Law 6. Given the following data: C(graphite) C(diamond); AH -+1.897 k Coo(fullerene); AHo+2193 k) 60 C(graphite) calculate the standard enthalpy of reaction for the conversion of buckminsterfullerene (Co) Into diamond: 1/60 Ceo (fullerene) C (diamond) 7. Given the following thermochemical data at 25°C and 1 atm pressure: O2(g) +2 B(s) B2O3(s), AHo-1264 k) O3(9) +2 B(s) calculate the standard enthalpy for the following reaction: B2O3(s), AHo=-1406 k) 2 O3(g) 3 O2(g) b