Introduction
Hess's Law states that the enthalpy change of a chemical reaction is the same regardless of the number of steps taken to get from reactants to products. This calculator helps you calculate the enthalpy change of a target reaction using known reactions.
Formally, Hess's Law can be stated as:
ΔHtotal = ΣΔHproducts - ΣΔHreactants
Where:
- ΔHtotal is the total enthalpy change of the target reaction
- ΔHproducts is the sum of the enthalpies of the products in the known reactions
- ΔHreactants is the sum of the enthalpies of the reactants in the known reactions
Let's get started!