The color of all the substances in the high chemical solubility table

1.The color of the important ions.

Cu2+: blue, such as a solution of copper salts: Cu(NO3)2, CuCl2, CuSO4.

Fe3+: yellow, such as a solution of iron salts: Fe(NO3)3, FeCl3, Fe2(SO4)3.

Fe2+: light green, such as a solution of ferrous salts: Fe(NO3)2, FeCl2, FeSo4.

Most solvable acids and alkali salts: colorless 2Most of the insoluble acids and alkali salts are white, such as AGCL, Mg(OH)2, etc. The colors of other insoluble substances are as follows:

Reddish-brown: Fe2O3.

Reddish-brown: Fe(OH)3.

Blue: Cu(OH)2, CuCO3

Black: Cuo, C, Fe3O4, MnO2. 3.Reaction with acid-base indicators: litmus, phenolphthalein, pH test paper.

Note: Sodium carbonate and potassium carbonate are alkaline, and sodium bisulfate is acidic. Insoluble bases do not discolor the indicator. 4.Only the two precipitates, AGCL and BaSO4, are insoluble in acids, and the other precipitates are soluble in acids.

There are too many, don't list them, flip through the book yourself, and you can ask any difficult questions.

Solution: Fe(scn)3

Blood-red potassium permanganate.

kmNO4).

Fuchsia copper salt.

blue), ferrous salts (

light green), iron salt (yellow).

Gas: chlorine.

Yellow-green nitrogen dioxide.

Reddish-brown iodine vapor.

Purple-black precipitation: white flocculent precipitation.

Aluminum hydroxide. brick-red precipitate.

Cuprous oxide. Special phenomenon: the white precipitate gradually turns gray-green and then turns to reddish-brown ferrous hydroxide.

is oxidized in the air.

Iron hydroxide. The white precipitate is soluble in acids and alkalis.

can make red.

Litmus paper. Bluish gas.

Ammonia meets starch and turns blue with iodine.

There are many more that can be summarized and improved in the topics encountered in the future.

Suggestion: Don't learn to die of knowledge, learn to use it!

Potassium permanganate (KMNO4) solution. Amaranth.

Liquid bromine (br2) reddish-brown

Iodized water (I2) High concentration: purple Low concentration: brown Fe(scn)3....Sanguine.

Soluble salt solution of ferric ions (Fe2+) light green. For example: feso4....FeCl2 et al.

Soluble salt solution of ferric ions (Fe3+) yellow. Such as: Fe2(SO4)3....FeCl3 et al.

Soluble salt solution of copper ions (Cu2+) in blue. For example: cuso4....cucl2 et al.

Fe (SCN) 2+ (blood red).

Cu2O (brick red).

Fe2O3 (reddish-brown).

Red phosphorus (reddish-brown).

Liquid bromine (dark reddish-brown).

Fe(OH)3 (reddish-brown).

Ccl4 solution of I2 (fuchsia).

mNO4- (purplish-red).

CU (fuchsia).

Phenol (pink) that has been left in the air for a long time

Ions: ferric ions (yellow) ferrous ions (light green) copper ions (blue) permanganate (purple-red) dichromate (orange) trivalent chromium ions (gray-green) Precipitation: white precipitate (aluminum hydroxide, ferrous hydroxide, magnesium hydroxide and other hydroxides, calcium carbonate, silver carbonate, barium carbonate, silver chloride) silver bromide (light yellow) silver iodide (...)

You just have to memorize a few common ones and you're good to go. There's no need to make a list, it's inconvenient to remember.

1.All "formate", "acetate", "propionate", "dihydrogen phosphate", "bisulfite" and "bicarbonate" are soluble in water.

2.Dichromate (except silver salts) is soluble in water.

3.Phosphates, biphosphates, sulfites (except K, Na, NH4) are not tolerated with water.

4.Hydrosulfate (sulfide) is not tolerated except K, Na, NH4, of which MG, CA, SR, BA are dissolved by rehydrolysis (copper sulfide, lead sulfide, mercury sulfide, etc. are not soluble in hydrochloric acid).

5.Chromates (except K, Na, NH4, Mg, Ca) are insoluble in water.

6.Thiosulfates are generally soluble (except for AG salts).

7.Thiocyanates (except Cu, Ag, Au, etc.) are mostly soluble.

As for the following, you can understand it:

8.Benzoate: Except for K, Na, Mg, Co, Ba, Ca, Sr slightly soluble, most of the rest are not allowed.

9.Stearate, palmitate, oleate: basically slightly soluble in water, but Na, K salt solubility is slightly larger.

In terms of solution: Fe(SCN)3 blood red.

Potassium permanganate (KMNO4) solution fuchsia.

Copper salts (blue), ferrous salts (light green), iron salts (yellow).

Gas: chlorine yellow-green.

Nitrogen dioxide reddish-brown.

Iodine vapor purple-black.

Precipitation: white flocculent precipitation of aluminum hydroxide.

Brick-red precipitates cuprous oxide.

Special phenomenon: the white precipitate gradually turns gray-green and then turns reddish-brown ferrous hydroxide is oxidized to iron hydroxide in the air.

The white precipitate is soluble in acids and alkalis.

A gas that can make red litmus paper blue ammonia.

Substances that turn blue in case of starch iodine element.

There are many more that can be summarized and improved in the topics encountered in the future.

Suggestion: Don't learn to die of knowledge, learn to use it!

Hydrogen cavern skin and iron oxide grip: reddish-brown sedimentation, copper hydroxide: blue precipitate, and other insoluble substances or microsoluble substances (only acids, alkalis, and salts) required in high school are white.

Oak carbonate and calcium.

White. Barium sulfate.

White. Barium carbonate.

White. Silver chloride.

White. Brominated beams compass silver.

Pale yellow. Silver iodide.

Magnesium hydroxide. White fingers.

Iron hydroxide. Sorrel.

Ferrous hydroxide.

White. Copper hydroxide. Blue.

That place is quite complete.

Also, tell you some mantras::

Solubility of common substances (1).

Potassium and ammonium salts are soluble, and nitrate is nowhere to be found in water.

Sulfate is insoluble in barium and lead, chloride is insoluble in silver and mercury.

Other salts are dissolved in three types

The precipitate is soluble in strong acids.

Potassium, sodium, barium, calcium, and alkali soluble,

Others also dissolve strong acids.

Note: In addition to nitrate, sulfate, and chloride, only potassium, sodium, and ammonium salts are soluble. Calcium hydroxide Ca(OH)2 is slightly soluble.

Solubility of common substances (2).

Potassium, sodium, ammonium saline is soluble, and nitrates have the same properties;

Sulfur "salts do not dissolve barium with lead,

Chlorine "salts are insoluble silver mercurous; ②

Weak alkali and that weak salt, most of which are insoluble in water.

Note: "Sulfur" salt, refers to sulfate.

"Chlorine" salt, refers to hydrochloride.

Solubility of salts.

All sodium and potassium salts are dissolved, and the same is true for ammonium salts and nitrates.

Except for barium sulfate and lead, mercurous chloride and silver are insoluble, sulfite, phosphate, sodium, potassium, ammonium are insoluble, carbonate and silicate are all similar to the above.

Potassium sulfide, barium, sodium, magnesium soluble, calcium sulfide slightly soluble remainder insoluble.

Salt solubility song.

Potassium nitrate and sodium are soluble, carbon silicon and sulfur, hydrochloric acid are insoluble after mercury and sodium. Barium lead sulfate, slightly soluble lead chloride, phosphate salts are mostly insoluble.

Calcium silver mercury sulfate.

Note: None of the metal salts in the solubility table after sodium are soluble in water.

Solubility of acid and alkali salts.

Potassium, sodium, ammonium salt, nitrate, can be soluble in water, hydrochloric acid in addition to silver and mercury, sulfuric acid is insoluble is barium lead.

Phosphoric acid carbonate is not soluble, the dissolver only potassium sodium ammonium, alkali has potassium sodium ammonium and barium, and magnesium salt is added to the sulfide.

The rest are insoluble, slightly soluble in a few minds:

There is only one calcium in the alkali, mercury and calcium silver are sulfates, only lead is in chloride, and the attached magnesium is sulfurous acid;

There is calcium in the sulfide, and it is not difficult to memorize it.

The main alkali and salt solubility formula.

Potassium, sodium, ammonium, nitrate, solubility.

Potassium salt, sodium salt, ammonium salt, nitrate fully soluble).

Hydrochloric acid except silver, mercury (Hg+), agcl and hg2cl2 in hydrochloride insoluble) sulfuric acid insoluble barium, lead, sulfate in baso4 and pbso4 insoluble) dissolved alkali only potassium, sodium, barium, calcium, ammonium.

Ca(OH)2 is slightly soluble

Carbonic acid, phosphoric acid in the clear salt, only soluble potassium, sodium, ammonium).