The overall transfer velocity KL would additionally vary, if the gas reacts chemically with other substances dissolved
in the water (e.g., dissociation). Carbon dioxide, hydrogen sulfide, sulfur dioxide, and ammonia are examples for reactive gases, which are particularly important in nature. Typically, the kinetic time constants for these chemical reactions are significantly shorter than for the hydrody-namic exchange processes. This leads to an enhancement of the gas transport and thus to a higher KL value.
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