Calcium iodide and silver sulphate solutions will form a double precipitate of silver iodide (yellow) and calcium sulphate (white).
cations of group 1 and 2. other groups DO form precipitates.
Cations: none that i can think of.
Anions: S(2-), CO3(2-), PO4(3-), SO3(2-), CrO4(2-)
AND OH- with weak bases
For example barium cation form a precipitate with sulfate anion -BaSO4.
Chloride and sulfate
Ions of opposite charge, cations (+ve) and anions (-ve)
When Group 2A elements form ions they lose the electrons in their outer shell. In doing so they form positive ions known as cations.
Al2(SO3)3 Two cations of aluminum. 2Al 3+ ====
Explain how adding aqueous NH3 to the combined AgCl-Hg2Cl2 precipitate effects the separation of the two cations.
monosaccharides
Precipitates form whenever two insoluble ions are in solution, thereby leaving solution. They can form either gases or solids (usually solids).
This depends on the composition of the two solutions.
Ions of opposite charge, cations (+ve) and anions (-ve)
Ions of opposite charge, cations (+ve) and anions (-ve)
Ions of opposite charge, cations (+ve) and anions (-ve)
No. Binary molecular compounds are made out of two nonmetals covalently bonded. Examples include H2O, CO, CO2, H2S, NO2, SO2. Two cations would never form a compound because like charges repel.
elements which have 1 to 3 valence electrons will generally lose electrons and form cations. elements which need 1 to 3 electrons to attain the nearest noble gas configuration will generally gain electrons and form anions
Cations, positively charged ions. These are made by atoms with an just one or two electrons populating the number of positions in their outer shell and where loss of these to another atom allows them to present a filled outer shell. Many metals form Cations.
Chemical sediments, when conditions are right, precipitates to form chemical sediments. This precipitation occurs one of two ways, by physical processes, or by biochemical origin.
When Group 2A elements form ions they lose the electrons in their outer shell. In doing so they form positive ions known as cations.
It is a Group 2 element, therefore it has two outer-shell electrons. To gain a full outer-shell, it loses two electrons to form a cation (cations are positive ions)
Cations and anions