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Calcium iodide and silver sulphate solutions will form a double precipitate of silver iodide (yellow) and calcium sulphate (white).

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15y ago
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12y ago

cations of group 1 and 2. other groups DO form precipitates.

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13y ago

Cations: none that i can think of.

Anions: S(2-), CO3(2-), PO4(3-), SO3(2-), CrO4(2-)

AND OH- with weak bases

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6y ago

For example barium cation form a precipitate with sulfate anion -BaSO4.

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13y ago

Chloride and sulfate

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Q: What two cations commonly form precipitates?
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Related questions

What physical state are precipitates when they form?

Precipitates form whenever two insoluble ions are in solution, thereby leaving solution. They can form either gases or solids (usually solids).


Why do precipitates form from the mixing of 2 aqueous solutions?

This depends on the composition of the two solutions.


What two ions can form ionic bond?

Ions of opposite charge, cations (+ve) and anions (-ve)


What two ions form an ionic bond?

Ions of opposite charge, cations (+ve) and anions (-ve)


What two ions can form an ionic bond?

Ions of opposite charge, cations (+ve) and anions (-ve)


Are binary molecular compounds made out of two cations?

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.


How can you tell what type of ion an atom will form by looking at the periodic table?

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


What atoms form ions by the loss of electrons?

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.


How do chemical sediments produce rock?

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 a group 2A elements form ions they?

When Group 2A elements form ions they lose the electrons in their outer shell. In doing so they form positive ions known as cations.


How many valance electrons are in Be?

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)


What are Two compounds combine to create a binary compound?

Cations and anions