discons: Dissociation constants and standard enthalpy for weak...

In tidywater: Water Quality Models for Drinking Water Treatment Processes

Dissociation constants and standard enthalpy for weak acids/bases

Description

Equilibrium constants (k) and corresponding standard enthalpy of reaction values (deltah) for significant acids in water influencing pH at equilibrium. Includes carbonate, sulfate, phosphate, and hypochlorite. Standard enthalpy of reaction is calculated by taking the sum of the enthalpy of formation of each individual component minus the enthalpy of formation of the final product. e.g., the standard enthalpy of reaction for water can be calculated as: deltah_h2o = deltah_f_oh + deltah_f_h - deltah_f_h2o = -230 + 0 - (-285.83) = 55.83 kJ/mol. See MWH (2012) example 5-5 and Benjamin (2002) eq. 2.96.

Usage

discons

Format

A dataframe with 8 rows and 3 columns

ID

Coefficient type

k

Equilibrium constant

deltah

Standard enthalpy in J/mol

Source

Benjamin (2015) Appendix A.1 and A.2.

See references list at: https://github.com/BrownandCaldwell-Public/tidywater/wiki/References

tidywater documentation built on Aug. 8, 2025, 7:15 p.m.