Chemistry Solubility of acid base salts, what is acid base salt solubility?

For example: potassium chlorate + sulfuric acid does not react, assuming the reaction, potassium sulfate + chloric acid will be generated, but potassium sulfate is soluble, it will not generate one of gas, water, and precipitation, and does not meet the conditions for metathesis, so there will be no reaction.

If you have to write equations, I'll write them to you, but these reactions don't happen, so these equations don't really exist, so be sure to understand that.

2kclo3 + h2so4 = k2so4 + 2hclo3 and then there are e.g. copper sulfate and sodium nitrate.

cuso4+2nano3=cu(no3)2+na2so4

There are many, the one upstairs is cited, and the solubility of calcium sulfate is very small, so it can be regarded as insoluble, so calcium hydroxide and sulfuric acid react to generate calcium sulfate and water, calcium sulfate precipitate, so the reaction can continue!

Since it can't react, the chemical equation from **?

The reaction can be carried out by seeing whether the reactants form water gas or precipitation.

As. 2hci+caco3=cacl2+h2o+co2

Oh, and the reason why it can't react is because the substances before and after the reaction can be dissolved in solution and decomposed into ions, which is equivalent to no reaction.

Example: 2NaCl + K2SO4 = Na2SO4 + 2KCl Sodium chloride and potassium sulfate react to form sodium sulfate and potassium chloride, both of which are easily soluble and cannot react.

It can be written as an ionic equation and then reduced, and if it is 0=0 at the end, it cannot be reacted.

The solubility of acid and alkali salts is to decompose when exposed to water. Then several at the same time put into the water is to form a precipitate or gas, depending on the reaction between them, mainly metathesis reaction, such as Na2CO3 and HCl will react to form CO2, so there are bubbles produced, potassium, sodium, ammonia salt, nitrate.

Solubility characteristics of acid and base saltsDissolution indicates that this substance is easily soluble in water to form a solution, does not indicate that this substance is insoluble in water, it can not form a solution, in water or solid form, volatilization indicates that this substance is easy to volatilize into gaseous state, micro this substance is slightly soluble in water, the mass fraction of the solution formed is relatively small, and most of the substances are still in solid form after being added to water.

Potassium, sodium, ammonia salt, nitrate can be dissolved in water, barium insoluble in sulfate, silver insoluble in chloride, potassium carbonate, sodium ammonia salt, dissolved potassium hydroxide, sodium calcium barium, silver insoluble in chloride, barium insoluble in sulfate, barium insoluble, such as chloride, only agcl is precipitated and insoluble, and only baso4 in sulfate is precipitated and insoluble.

Salts are soluble in potassium. Sodium. The same is true for ammonium salts; Carbonates have only potassium.

Sodium. Ammonium, except for these three are completely insoluble; Sulfate is mostly soluble, and only barium is insoluble. Calcium.

Silver, the last hydrochloride remains, and the precipitation is only chlorine and silver; Most alkalis are insoluble, potassium. Sodium. Barium solubility, calcium microsoluble means that all potassium salts, sodium salts, ammonium salts, and nitrates are soluble in water and can be dissolved when added to water; In addition to silver chloride and mercurous chloride, the hydrochloride is insoluble in water, and the others can be soluble in water; Among the sulfates, only lead sulfate and barium sulfate are insoluble in water, and other sulfates can be soluble in water.

Calcium sulfate and silver sulfate are slightly soluble in water. Among carbonates and phosphates, most of them are insoluble in water, except for potassium salts, sodium salts, and ammonium salts in carbonates and phosphates, which are soluble in water. Substances belonging to alkalis, such as sodium hydroxide, potassium hydroxide, rubidium hydroxide, etc., can be soluble in water, strong alkaline alkali (the first main group and some elements of the second main group) can be soluble in alkaline earth metal elements (second main group) calcium slightly soluble (because calcium and water react, produce mountains and produce calcium hydroxide, the micro-dissolution will be wrapped on the surface of calcium to prevent the reaction).

It is applied to metathesis reaction, and the metathesis reaction occurs only when there is a precipitate (when it is not dissolved) in the metathesis reaction.

Generate precipitation, intolerable can write chemical formula in the junior high school stage can not be tolerated on the memory of calcium carbonate on the line, the solubility table is used in the exam, the test will be given, no need to memorize, will look on the line, soluble than slightly soluble, easier to dissolve, slightly soluble is only very soluble, but does not mean completely insoluble.

Summary of acid-base salt solubility:

1. Macroate chalcoate removes barium, lead and calcium, and chloride is insoluble in silver chloride.

The nitrate solution is transparent, and it does not sink in the formula.

Potassium, sodium, ammonium salt, dissolves quickly.

Note: Only barium sulfate, lead sulfate, and calcium sulfate are insoluble in sulfate. Nitrates are soluble in water. Salts that are not mentioned in the mantra are insoluble in water.

2. Potassium, sodium, ammonium salt, nitrate.

Chloride except silver and mercurous.

Sulfate removes barium and lead.

Carbonic acid, phosphate, only soluble potassium, sodium, ammonium.

3. Potassium, sodium, ammonium, nitrate are soluble, and hydrochloride is insoluble silver mercurous.

Sulfate is insoluble barium and lead, carbon phosphate is mostly insoluble.

Most acids are soluble and alkaline, and only potassium, sodium, ammonium, and barium are soluble.

Note: Silicic acid (silicate) not mentioned in the formula is poorly soluble in water.

4. Potassium, sodium, nitric acid soluble.

Hydrochloric acid except silver (sub)mercury.

Speaking of sulfate, barium and lead are not allowed.

Only potassium, sodium, and ammonium are dissolved.

Finally, alkalis, potassium, sodium, ammonium, and barium.

There are also several microlyses that can be remembered separately.

5. Potassium, sodium, ammonium salt, nitrate, it is not difficult to dissolve completely.

Mercurous chloride, silver chloride, barium sulfate and lead sulfate.

The four substances are insoluble, forming a precipitate memory.

Hydrosulfates and alkalis, carbonate phosphate silicates.

Insoluble is the majority, and only potassium, sodium ammonium is soluble.

6. Alkali soluble potassium, sodium, barium calcium, potassium, sodium, ammonium, nitrate fully soluble.

Carbonate dissolves potassium sodium ammonium, hydrochloride is insoluble except silver.

Sulfate is insoluble except barium silver.

Special cases: 1. The solubility of potassium, rubidium and cesium salts of perchloric acid is very small.

2. The solubility of silver perchlorate is very large, 5570 g l.

3. Silver fluoride is soluble in water, and the solubility is large, 1800 g l.

4. Potassium tetraphenylboron, sodium trititanate and ammonium diuranate are insoluble in water.

Chemistry is a rule, and it is not easy to memorize the soluble acidity and alkali salts of junior high school chemistry.

If you find a pattern, it's simple.

1. Most acids are soluble (HCl, HNO3, H2CO3 are volatile, and concentrated H2SO4 are absorbent.) ）

2. Solubility of alkali: potassium, sodium, barium, ammonium solubility, calcium slightly soluble, and the rest of the alkali is completely insoluble.

3. Solubility of salt:

Potassium, sodium, ammonium, nitrate four salt soluble. (Potassium salt, sodium salt, ammonium salt, nitrate are all soluble in water).

Chloride is completely soluble except for AGCL insoluble.

Except for Baso4 which is insoluble and Ag2SO4 and CaSO4 are slightly soluble, the rest are fully soluble.

Carbonate is insoluble except for potassium, sodium, ammonium salt, and MgCO3 microsoluble.

Let me teach you a formula, potassium, sodium, ammonium, nitrate dissolve in water (meaning any potassium salt, sodium salt, ammonium salt, nitrate can be, soluble in water).

Sulfate removes lead and barium (in sulfate, only lead sulfate and barium sulfate are insoluble in water).

Hydrochloride removes silver mercury (only silver chloride is in the salt of hydrochloric acid, which is insoluble in water with mercurous chloride, and the latter is almost never used).

Soluble alkali potassium sodium ammonium calcium barium (soluble in water is only potassium hydroxide, sodium ammonium, calcium barium, calcium hydroxide is slightly soluble, and they are the most commonly used strong bases in junior high school leakage front).

Let's talk about the two stubborn precipitates (this is not a regular term) baso4 and agcl, which are insoluble with any acid you have seen so far.

Then, all carbonate precipitates or alkalis that are insoluble in water will be dissolved by acids, but they are relatively strong acids, so don't think that carbonic acid can dissolve carbonate precipitates.

Most carbonates are insoluble in water, only potassium carbonate, sodium carbonate, ammonium carbonate are soluble, (the first sentence of the mantra), magnesium carbonate is slightly soluble.