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What Reacts With HCl To Form A White Precipitate?

A white precipitate of barium sulfate forms if sulfate ions are present. The hydrochloric acid is added first to remove any carbonate ions that might be present – they would also produce a white precipitate, giving a false positive result.

Will AgNO3 and HCl form a precipitate?

After the silver has dissolved, you will add hydrochloric acid solution to precipitate silver ions as silver chloride. AgNO3 (aq) + HCl (aq) → AgCl (s) + HNO3 (aq) Net ionic equation: ________________________________________________ You will then dry and weigh the silver chloride.

How do you know if dilute HCl?

The easiest way to test for hydrochloric acid is with silver nitrate solution. Add silver nitrate solution to the test solution in a test tube and observe the reaction. If a white precipitate forms, hydrochloric acid is present.

Does HCl form a precipitate?

If any lead ion is present, addition of cold HCl solution to the liquid will cause white lead chloride to precipitate.

What happens when dilute HCl is added to AgNO3 solution?

When a hydrochloric acid is added to silver nitrate solution then a curdy white ppt is formed.

What is the white precipitate in silver nitrate?

silver chloride


When a few drops of a silver nitrate solution are added to a slightly acidic aqueous solution that contains chloride ions, a white precipitate of silver chloride will form.

Why is the equation AgNO3 and NaCl called molar equation?

AgNO3(aq) + NaCl(aq) Æ AgCl(s) + NaNO3(aq) Sodium chloride (NaCl) remains in solution meaning that exits as a sodium ion (Na+) and a chloride ion (Cl-). This type of equation is called molar equation because it is written in terms

Which is the precipitating reagent of Group I?

The precipitating reagent of Group I is a dilute solution of hydrochloric acid, and the ionsprecipitated are those of silver, Ag+, mercury (I), Hg 22+, and lead (II), Pb2+. The net ionicequations are:Ag+ + Cl- AgCl(s) (AgCl is white, turning purple in light)Hg22+ + 2Cl- Hg2Cl2(s) (Hg2Cl2 is white) Pb2+ + 2Cl- PbCl2(s) (PbCl2 is white)

What kind of ions can be precipitated by HCL?

Group I (Ag+, Pb2+, Hg2+) cations produce insoluble chlorides so they can be precipitated with dilute HCl, while all other cations remain in solution. Group II (Cu2+, Bi3+, Cd2+, Hg2+, As3+, Sb3+, Sn4+) cations produce very insoluble sulfides (Ksp values less than 10-30) so they can be precipitated by low amounts of sulfide ion; this can be

How are Group II cations precipitated in solution?

Group II (Cu2+, Bi3+, Cd2+, Hg2+, As3+, Sb3+, Sn4+)cations produce very insoluble sulfides (Kspvalues less than 10-30) so they can be precipitated by low amounts of sulfide ion; this can be achieved by adding an acidic solution of H2S.


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