ΔH lig (rompidas−formadas)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The ΔH lig (broken-formed) calculator is a useful tool for chemists and chemistry students who need to calculate the variation of bond enthalpy in chemical reactions.
This calculator uses the formula Σbroken − Σformed to calculate the variation of bond enthalpy, which is crucial to understand the stability of chemical compounds and the energy released or absorbed in reactions.
Here you can calculate the variation of bond enthalpy in different types of chemical bonds, such as covalent, ionic and metallic.
Additionally, it is essential to remember that this calculator is a supporting tool and should be used in conjunction with theoretical and practical concepts of chemistry.
Frequently asked questions
What is the variation of bond enthalpy?
The variation of bond enthalpy is the energy released or absorbed when a chemical bond is formed or broken.
How to calculate the variation of bond enthalpy?
The formula to calculate the variation of bond enthalpy is Σbroken − Σformed, where Σbroken is the sum of the bond dissociation energies of the existing bonds and Σformed is the sum of the bond formation energies of the new bonds.
What are the bond dissociation and formation energies for?
The bond dissociation and formation energies are values that describe the energy required to break or form a chemical bond.
Can I use this calculator to calculate the variation of bond enthalpy in different types of chemical bonds?
Yes, this calculator can be used to calculate the variation of bond enthalpy in different types of chemical bonds, such as covalent, ionic and metallic bonds.
Is this calculator reliable?
Yes, this calculator is a reliable and accurate tool, but it is essential to remember that accuracy depends on correct input data and understanding of theoretical chemistry concepts.