enthalpy H i the sum of the internal energy U and the 'pV-energy'= p*V.
The pV term is also called flow-energy, pressure-energy or energy of displacement. The p is the external pressure, but for systems at constant pressure it is also equal to the internal pressure. Hence: H=U+pV.
It follows that H is a composite form of energy, a statement not commonly found in the literature.
>> 'Energy-balance of the Joule-Thomson experiment: Enthalpy change at decompression.' (NPT-procestechnologie, 2010, 17(4)18-22)
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A negative enthalpy of formation indicates that energy is evolved.
I think you're going to have to give us the equation first, dear
The 1st step would be to give an example of the equation to be solved.
If you have two equations give AND one parametric equation why do you need to find yet another equation?
write out the balanced equation that you need then write out formation equations (2-4) that will give you those reactants and products. manipulate the equations by reversing them or multiplying or dividing by whatever number. until you have what you need for the original equation. whatever you do to the equation, do it to the enthalpy for that equation. everything should add or cancel until you have the equation needed and you can add the enthalpies to get the enthalpy for that equation
The equation for ∆G is ∆G = ∆H - T∆S H is enthalpy and S is entropySo, ∆G is negative if T∆S is greater than ∆H
C + 2S -> CS2 Enthalpy of formation is the change in enthalpy for the formation of a substance from its elements.
The equation for ∆G is ∆G = ∆H - T∆S H is enthalpy and S is entropySo, ∆G is negative if T∆S is greater than ∆H
Thermochemical equation includes enthalpy ( ΔH ) change in it.
The difference between the enthalpy of formation of the products minus the enthalpy of formation of the reactants is the enthalpy of the reaction
CH3CHO+HCl
yea
"Try as he might, he could not solve the equation."
Enthalpy is the energy absorbed or lost from a reaction, but enthalpy change per mole is the amount of energy lost per mole, so in order to get the overall enthalpy from the change per mole, you must multiply that value by the amount of moles used in the reaction.
NaCl+H2O COMPELATE THE EQUATION
Enthalpy is the measurement of total energy change of a reaction. The energy of bond formation and bond breaking can be used to calculate the bond enthalpy of the reaction. Bond enthalpy is the enthalphy change when 1 mol of bond is broken. Therefore the general equation to calculate the enthalpy change is energy of bond broken subtract by energy of bond formation.