Difference between revisions of "Conjugate base"

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A '''conjugate base''' is the negatively charged [[ion]] which results from an acid donating a [[proton]] (H<sup>+</sup>). This ion acts as a [[base]], with a strength inverse to the strength of the original acid. An example conjugate base is a [[nitrate]] ion (NO<sub>3</sub><sup>-</sup>), which is formed when [[nitric acid]] (HNO<sub>3</sub>) gives up its proton.
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When a molecule donates a proton, it is called the '''conjugate base''' of the original molecule. For example, NH<sub>3</sub> is the conjugate base of NH<sub>4</sub><sup>+</sup>. NH<sub>4</sub><sup>+</sup> and NH<sub>3</sub> are a conjugate acid-base pair. One can be transformed into the other by undergoing a simple [[acid-base reaction]].
  
==See Also==
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The conjugate acid acts as an acid, with a strength inversely proportional to the strength of its conjugate base. For example, since NH<sub>3</sub> is a weak base, NH<sub>4</sub><sup>+</sup> is a fairly strong acid.
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==See also==
 
*[[Conjugate acid]]
 
*[[Conjugate acid]]
 
*[[Acid-base reaction]]
 
*[[Acid-base reaction]]
  
[[Category:Chemistry]]
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[[Category:Bases]]

Latest revision as of 01:44, 13 July 2016

When a molecule donates a proton, it is called the conjugate base of the original molecule. For example, NH3 is the conjugate base of NH4+. NH4+ and NH3 are a conjugate acid-base pair. One can be transformed into the other by undergoing a simple acid-base reaction.

The conjugate acid acts as an acid, with a strength inversely proportional to the strength of its conjugate base. For example, since NH3 is a weak base, NH4+ is a fairly strong acid.

See also