Difference between revisions of "Double replacement"
From Sciencemadness Wiki
| Line 1: | Line 1: | ||
{{Stub}} | {{Stub}} | ||
| − | A '''double replacement''' or ''' | + | A '''double replacement''' or '''salt metathesis reaction''' is a reaction where two cations exchange anions or vice versa. |
These reactions are usually in equilibrium; they proceed to completion in the following cases: | These reactions are usually in equilibrium; they proceed to completion in the following cases: | ||
Latest revision as of 18:27, 5 October 2018
 |
This article is a stub. Please help Sciencemadness Wiki by expanding it, adding pictures, and improving existing text.
|
A double replacement or salt metathesis reaction is a reaction where two cations exchange anions or vice versa.
These reactions are usually in equilibrium; they proceed to completion in the following cases:
- One of the resulting products is insoluble and precipitates (e.g. barium sulfate);
- One of the resulting products is a poorly dissociated, mostly molecular compound (e.g. water);
- One of the resulting products is volatile and is distilled off the mixture (e.g. nitric acid);
- One of the resulting products is unstable and decomposes into non-ionic products such as gases and water (e.g. carbonic acid);
