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GEN CHEM S2 Q3
ENTHALPY
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Enthalpy
A
thermodynamic
quantity equivalent to the total
heat
content of a system. It is the measurement of total energy stored in a system.
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Enthalpy
It is a
state
function
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State function
Values that depend on the state of the
substance
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To write thermochemical equation
1.
Endothermic
Reaction (+ΔH): Reactants +
Energy
→ Products
2. Exothermic Reaction (-ΔH):
Reactants
→ Products +
Energy
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ΔH
Σ ΔH
products
- Σ ΔH
reactants
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