Alkali hydroxide: Difference between revisions
Rsrikanth05 (talk | contribs) m Reverted 1 edit by 81.102.25.188 identified as test/vandalism using STiki |
Christian75 (talk | contribs) HO changed to OH and remove what sounds like it dissolves because its a strong base. NaCl dissolves too, even that its a very very very weak base |
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The '''alkali hydroxides''' are a class of [[chemical compound]]s which are composed of an [[alkali metal]] [[cation]] and the [[hydroxide]] anion ( |
The '''alkali hydroxides''' are a class of [[chemical compound]]s which are composed of an [[alkali metal]] [[cation]] and the [[hydroxide]] anion (OH<sup>−</sup>). The alkali hydroxides are: |
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*[[Lithium hydroxide]] (LiOH) |
*[[Lithium hydroxide]] (LiOH) |
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*[[Sodium hydroxide]] (NaOH) |
*[[Sodium hydroxide]] (NaOH) |
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*[[Rubidium hydroxide]] (RbOH) |
*[[Rubidium hydroxide]] (RbOH) |
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*[[Caesium hydroxide]] (CsOH) |
*[[Caesium hydroxide]] (CsOH) |
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"A strong base completely ionizes in aqueous solution to give HO<sup>−</sup> and a cation. Sodium hydroxide is an example of a strong base. The principal strong bases are the hydroxides of Group IA elements and group IIA elements."<ref>Ebbing, Darrell D & Gammon, Steven D. General Chemistry (Eighth Edition). Page 661. ISBN 0-618-39941-0</ref> |
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The most common alkali hydroxide is sodium hydroxide, which is readily available in most hardware stores in products such as a [[drain cleaner]]. Another common alkali hydroxide is potassium hydroxide. This is available as a solution used for cleaning terraces and other areas made out of wood. |
The most common alkali hydroxide is sodium hydroxide, which is readily available in most hardware stores in products such as a [[drain cleaner]]. Another common alkali hydroxide is potassium hydroxide. This is available as a solution used for cleaning terraces and other areas made out of wood. |
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Revision as of 14:35, 14 February 2016
The alkali hydroxides are a class of chemical compounds which are composed of an alkali metal cation and the hydroxide anion (OH−). The alkali hydroxides are:
- Lithium hydroxide (LiOH)
- Sodium hydroxide (NaOH)
- Potassium hydroxide (KOH)
- Rubidium hydroxide (RbOH)
- Caesium hydroxide (CsOH)
The most common alkali hydroxide is sodium hydroxide, which is readily available in most hardware stores in products such as a drain cleaner. Another common alkali hydroxide is potassium hydroxide. This is available as a solution used for cleaning terraces and other areas made out of wood.
All alkali hydroxides are very corrosive, being strongly alkaline.
A typical school demonstration demonstrates what happens when a piece of an alkali metal is introduced to a bowl of water. A vigorous reaction occurs, producing hydrogen gas and the specific alkali hydroxide. For example, if sodium is the alkali metal:
- Sodium + water → sodium hydroxide + hydrogen gas
- 2 Na + 2 H2O → 2 NaOH + H2