active mass


Definition of active mass

1 : the concentration of a reacting substance expressed usually in moles per liter
2 : the concentration of the portion of a dissolved electrolyte that is dissociated into ions and hence is capable of carrying the electric current

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First Known Use of active mass

1879, in the meaning defined at sense 1

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The first known use of active mass was in 1879

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Cite this Entry

“Active mass.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2020.

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