| Species Name | Formula | ΔfH°(298.15 K) |
|---|---|---|
| Octane | C8H18 (l) | -249.73 |
What is the standard enthalpy of formation of this isomer of C8H18(G)?
C8H18 (g)+252O2 (g)⟶8CO2 (g)+9H2O (g)ΔH∘rxn=−5113.3 kJ/mol What is the standard enthalpy of formation of this isomer of C8H18 (g)? ΔH∘f= Answer: The standard enthalpy of formation of this isomer of is -210.9 kJ
What is the formula for standard enthalpy change of formation?
This equation essentially states that the standard enthalpy change of formation is equal to the sum of the standard enthalpies of formation of the products minus the sum of the standard enthalpies of formation of the reactants. and the standard enthalpy of formation values: ΔH fo[A] = 433 KJ/mol. ΔH fo[B] = -256 KJ/mol.
What version of the thermochemical network has standard enthalpy of formation?
Selected ATcT enthalpy of formation based on version 1.118 of the Thermochemical Network Click to see full answer. Also to know is, what is meant by the term standard enthalpy of formation?
What is the value of heat per mole produced (H)?
According to the instructions, heat per mole produced (H) equals 5094 kj Therefore, -5094 kj is your H total.
What is the entropy of C8H18?
Octane-1,2,3,4-d9. Octane-1,2-d5....Entropy of gas at standard conditions (nominally 298.15 K, 1 atm.)S°gas (J/mol*K)467.06 ± 0.92ReferenceScott D.W., 1974CommentThis reference does not contain the original experimental data. Experimental entropy value is based on the results [ Messerly J.F., 1967] for S(liquid).; GT
What is the heat of combustion of C8H18?
The heat of combustion of octane (C8H18, Mm = 114 g/mol) is -5500 kJ/mol.
How do you calculate standard enthalpy of formation?
This equation essentially states that the standard enthalpy change of formation is equal to the sum of the standard enthalpies of formation of the products minus the sum of the standard enthalpies of formation of the reactants. and the standard enthalpy of formation values: ΔH fo[A] = 433 KJ/mol. ΔH fo[B] = -256 KJ/mol.
What is the molar enthalpy of octane?
The standard enthalpy of formation of octane `(C_(8)H_(18))` is `-250kJ //mol`.
What is the balanced equation of C8H18 O2?
C8H18+O2=CO2+H20.
How do you calculate enthalpy of combustion?
2:424:255.1 Standard enthalpy changes of formation and combustion - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe sum of the standard enthalpy change of combustion of the reactants. Minus the sum of theMoreThe sum of the standard enthalpy change of combustion of the reactants. Minus the sum of the standard enthalpy change of combustion of the products.
What is the standard enthalpy of formation of co2?
-393.5 kJ/molThe enthalpy of formation of carbon dioxide at 298.15K is ΔHf = -393.5 kJ/mol CO2(g).
Which elements have a standard enthalpy of formation of zero?
All elements in their standard states (oxygen gas, solid carbon in the form of graphite, etc.) have a standard enthalpy of formation of zero, as there is no change involved in their formation.
Why the standard enthalpy of formation is zero?
The enthalpy of formation for an element in its elemental state will always be 0 because it takes no energy to form a naturally-occurring compound.
How do you calculate enthalpy of octane?
molar enthalpy of formation of octaneNext balance the chemical equation. ... We see that there are 2 oxygens on the left and 25 oxygens on the right. ... Multiply the entire equation by 2 to get rid of the fraction.dH0rxn = dHf0products - dHf0reactantsIn this case dH0rxn = dH0combustion = -5074.1 kJ/mol.More items...•
What are the isomers of C8H18?
C8H18 all isomersOctane.2-Methyl heptane.3-Methyl heptane.4-Methyl heptane.2, 2-Dimethyl hexane.2, 3-Dimethyl hexane.2, 4-Dimethyl hexane.2, 5-Dimethyl hexane.More items...
What is the specific heat of octane?
The specific heat of octane, C8H18(l), is 2.22 J/g-K.
Answer
Answer: The standard enthalpy of formation of liquid octane is -250.2 kJ/mol
New questions in Chemistry
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