Bronsted base

(redirected from Brønsted-Lowry acid-base theory)
Also found in: Encyclopedia, Wikipedia.

Brøn·sted base

any molecule or ion that combines with a proton, for example, OH-, CN-, NH3; this definition replaces the older and more limited concepts of base (3) (q.v.).

Brønsted base

Etymology: Johannes N. Brønsted
a molecule or an ion that acts as a hydrogen ion acceptor.

Brøn·sted base

(brŭn'shtet bās)
Any molecule or ion that combines with a proton; e.g., OH-, CN-, NH3; this definition replaces the older and more limited concepts of base (3).


Johannes N., Danish physical chemist, 1879-1947.
Brønsted acid - an acid that is a proton donor.
Brønsted base - any molecule or ion that combines with a proton.
Brønsted theory - that an acid is a substance, charged or uncharged, liberating hydrogen ions in solution, and that a base is a substance that removes them from solution.
References in classic literature ?
In truth, he saw nothing-unless he were wizard enough to detect a poignant wish, a powerful longing that the cable car would never stop anywhere, but go on and on with her forever.
With a rattling song the starboard watch bent to their work and hove the cable short, then got the anchor home, and our bark moved off with a stately stride, and soon was bowling along at about two knots an hour.
At dawn she got up and went listlessly and sat down on the cable coil again.
They had seen me cut the cables, and thought my design was only to let the ships run adrift or fall foul on each other: but when they perceived the whole fleet moving in order, and saw me pulling at the end, they set up such a scream of grief and despair as it is almost impossible to describe or conceive.
There were no switchboards of any account, no cables of any value, no wires that were in any sense adequate, no theory of tests or signals, no exchanges, NO TELEPHONE SYSTEM OF ANY SORT WHATEVER.
The frigate, immediately upon coming to an anchor, got springs on her cables, and with he guns; cast loose and her men at their quarters, lay in the circular basin of Papeete, with her broadside bearing upon the devoted town; while her numerous cutters, hauled in order alongside, were ready to effect a landing, under cover of her batteries.
said he, looking up from his fourth cable since lunch.
Long Jack and Uncle Salters slipped the windlass-brakes into their sockets, and began to heave up the anchor, the windlass jarring as the wet hempen cable strained on the barrel.
He said he knew they had tried to lay a cable ten years ago, but it had been in his mind somehow that they hadn't succeeded!
I will promise that you can cable him a report within two weeks," replied the officer; "but what it will be I dare not say.
The audience dispersed at last, discussing how far they would enjoy crossing an abyss on a wire cable.
In attempting to lift it from its burying place I dis-covered that it seemed to be held fast by means of a very small insulated cable running farther into the sand beneath it.