Calculate Heat Changes in Chemical Reactions with Precision
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Calculate enthalpy change using reactant and product enthalpies of formation.
Calculate enthalpy change using mass, specific heat capacity, and temperature change.
Calculate overall enthalpy change using multiple reaction steps.
Enthalpy change (ΔH) represents the heat absorbed or released during a chemical process at constant pressure. It's fundamental to understanding:
Understanding enthalpy signs:
Key principles of Hess's Law:
Enthalpy calculations are used in:
Related thermodynamic concepts:
ΔH°rxn = Σ(n × ΔH°f)products - Σ(n × ΔH°f)reactants
q = m × c × ΔT
ΔH°total = ΣΔH°steps