TERMIUM Plus®

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CATION POTASSIUM [1 record]

Record 1 2011-01-18

English

Subject field(s)
  • Chemistry
Universal entry(ies)
K+
correct, formula, see observation
CONT

Both sodium and potassium ions are found in living tissue. They take part in many enzyme actions. In plants, the potassium ion is an important cation. Plants selectively absorb this ion from the soil.

CONT

In higher animals potassium ions (K+) together with sodium ions act at cell membranes in transmitting electrochemical impulses in nerve and muscle fibres and in balancing the activity of food intake and waste removal from cells.

OBS

Every cation is necessarily an ion; an ion must be either a cation or an ion.

OBS

Chemical formula: K+

French

Domaine(s)
  • Chimie
Entrée(s) universelle(s)
K+
correct, formula, see observation
CONT

Toutes les mers du globe renferment le cation potassium K+, mais la teneur (0,05 p. 100) est très inférieure à celle de son homologue Na+. Malgré sa dilution dans l'eau de mer, K+ peut être extrait industriellement par précipitation de sels peu solubles avec des réactifs tels que la dipicrylamine

OBS

pluriel : des ions potassium et des cations potassium.

OBS

Formule chimique : K+

Spanish

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