Endothermic compounds have positive standard heats of formation. An example is acetylene C2H2 ( delta Hof...
Endothermic compounds have positive standard heats of formation. An example is acetylene C2H2 ( delta Hof = 226.7 kJ/mol). Combustion of acetylene in pure oxygen produces a flame hot enough to cut weld steel.
a) What is the standard heat of combustion of acetylene?
b) What is the fuel value of acetylene, assuming the products are CO2 and H2O vapor?
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Endothermic compounds have positive standard heats of formation.
An example is acetylene C2H2 ( delta
Hof...
Using the standard heats of formation that follow, calculate the standard enthalpy change for the following...
Using the standard heats of formation that follow, calculate the standard enthalpy change for the following reaction. Species ΔΗΡ(kJ/mol) CO2(g) -393.5 C2H2(g) 226.7 H2O(g)241.8
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
Using the standard heats of formation that follow, calculate the standard enthalpy change for the following reaction. Species ΔΗΡ(kJ/mol) CO2(g) -393.5 C2H2(g) 226.7 H2O(g)241.8
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
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