Question 30 on acid salts and base reactions

Do you know how to write ionic equations? Write it out and you'll know.

Just remember: there can be no ions in the final equation that cannot coexist.

The law of the reaction of the alkali with the acid salt (the acid acid of the strong acid and the acid of the weak acid) is to neutralize and neutralize again until one of the acids and bases is killed by the other (the neutralization is completed).

With strong acids, hydrogen ions are neutralized into water, and with weak acids, hydrogen is neutralized from acid acids.

As for the amount or the amount, don't care, do what you told above, and you will naturally know.

1 The products are sodium sulfate, potassium sulfate and water.

2 The products are sodium carbonate, potassium carbonate and water.

3 The products are potassium sulfate and water.

4 The products are potassium carbonate and water.

5 products barium sulfate and water and sodium sulfate.

6 The product is barium carbonate sodium carbonate water.

The above is the case of potassium hydroxide and barium hydroxide, if they are small, there are still acid roots... It's so troublesome, it's not clear all of a sudden, if there's anything unclear to tell me, I'll give you the **.

6. I can't react.

5 products barium sulfate and water and sodium sulfate.

4 The products are potassium carbonate and water.

3 The products are potassium sulfate and water.

2 The products are sodium carbonate, potassium carbonate and water.

1 The products are sodium sulfate, potassium sulfate and water.

I don't think it's necessary to overdose the products of the problem are salts, and they should not react with alkalis and bicarbonate sulfates.

Question 1: What can the acid-base salt react with in junior high school, for example, what can acid react with Acid: 1. React with the acid-base indicator to make it discolored.

2. Metal reaction with activity before h (junior K, CA, NA, BA are not reacted).

3. React with alkali.

4. React with soluble salts or carbonates, and the reaction needs to meet the metathesis reaction conditions.

5. Reaction with metal oxides.

Alkali: 1. React with acid-base indicator to change color.

2. Reaction with acid.

3.and soluble salts, and the reaction needs to meet the metathesis reaction conditions.

4. Reaction with non-metallic oxides.

Salt: 1. Soluble salt and soluble salt react, and the reaction needs to meet the metathesis reaction conditions.

2. Soluble salt or carbonate reacts with acid, and the reaction needs to meet the metathesis reaction conditions.

3. Soluble salt and alkali reaction, and the reaction needs to meet the metathesis reaction conditions.

4. In reaction with metal, the activity of the metal needs to be greater than that of the metal cation in the soluble salt.

Note: Iron only reaches +2 valence in the displacement reaction.

Question 2: What reaction can chemical acid and alkali salts be used in junior high school, such as acid energy Soluble salt and alkali reaction: 1. Reaction with metal with activity before h (junior K, and the reaction needs to meet the metathesis reaction condition 5, Ca, and the reaction needs to meet the metathesis reaction condition 4, and the reaction with the base 4, so that it changes color 2, Na, and metal oxide reaction alkali, non-metal oxide reaction salt, and soluble salt or carbonate reaction, BA as no reaction) 3:

1, and the reaction needs to meet the metathesis reaction condition 3, the reaction with the acid-base indicator, and the acid reaction 3, and the reaction needs to meet the metathesis reaction condition 2Reaction with soluble salt: 1. Soluble salt or carbonate reacts with acid, soluble salt reacts with soluble salt, and reacts with metal, the activity of the metal needs to be greater than that of the metal cation in the soluble salt, and the acid-base indicator reacts with the acid-base indicator to change color 2, and the reaction needs to meet the metathesis reaction condition 4

Question 3: What substances can acid and alkali salts react with? Be sure to be full, thanks to Acid + Active Metal > Salt + Hydrogen.

Acid + metal oxide --- salt + water.

Acid + alkali --- salt + water.

Acid + salt--- new acid + new salt.

Alkali + some non-metallic oxides --- salt + water.

Alkali + acid--- salt + water.

Alkali + salt--- neoalkali + new salt.

Salt + Metal--- New Salt + New Metal.

Salt + acid--- new salt + new acid.

Salt + alkali --- new salt + new alkali.

Salt + Salt --- two new salts.

Question 4: What can acid-base oxides react with in chemistry? Acids react with metals, bases, most salts, and bases mainly react with acids

Both alkali and salt are soluble, and it is common for strong bases and weak salts to react to form weak bases and strong salts.

The reaction between acid, alkali and salt solution is formed by the exchange of components between two compounds, that is, the compound participating in the metathesis reaction is ionized in the aqueous solution and dissociated into free-moving ions, and the ions are recombined into new compounds.

On the one hand, the metathesis reaction is a requirement for reactants: salt, acid and alkali are generally OK, and salt salt and salt alkali need to be dissolved; On the other hand, there are requirements for the products: there are precipitation precipitation or gas release in the products, or weak electrolytes such as water are generated.

Both of these aspects must be taken into account in order to correctly write the chemical equations for metathesis reactions.

The alkali can react with certain salts to form another salt and another alkali, under the conditions: the reactants are soluble, and the products are precipitated.

Conditions for metathesis reaction: The metathesis reaction can only occur when two compounds exchange components with each other, and there is precipitation or gas or water in the product.

Common precipitates: AGCL Baso4 Cu(OH)2Fe(OH)3 mg(OH)2 BaCO3 CaCO3

Gases generated: H+ and CO32; NH4+ and OH produce water: H+ and OH

1. Acid: most of them are soluble (except silicic acid H2SiO3 is insoluble).

2. Alkali: only ammonia, sodium hydroxide, potassium hydroxide, barium hydroxide and calcium hydroxide are soluble in water, and the rest are precipitates.

3. Salt: potassium salt, sodium salt, nitrate, ammonium salt are soluble;

Except for Baso4, which is insoluble, and Ag2SO4 and CaSO4 are slightly soluble, most of the other sulfates are soluble;

Except for AgCl, which is insoluble, most of the other chlorides are soluble;

Except for potassium carbonate, sodium carbonate and ammonium carbonate, the rest of carbonate are insoluble.

Note: BaSO4, AGCL are insoluble in water and insoluble in acids.

How salt reacts chemically with alkali.

The second volume of the ninth grade book has a 、、、 solubility table. 109 pages.

Back acid-base salt solubility table. This is the only way.

1. Concept: Resistant to jujube kinase acid and alkali neutralization reaction.

It is a chemical reaction in which an acid reacts with a base to produce salts and water.

2. Essence: Its essence is that H+ in the acidic solution and OH in the alkaline solution combine to form neutral water H2O. （h+ +oh－＝h2o。）

3. Phenomenon: In the process of acid-base neutralization reaction, there will be very obvious chemical phenomena in Changsocks, such as the appearance of precipitate (salt), of course, in the medium rock source and reaction of some acid-base substances, there will be no too obvious phenomenon changes, at this time, we need to determine whether the neutralization reaction occurs with the help of some acid-base reagents.

Acid salt + acid ===

and strong acid reaction: NaHCO3 + HCl = NaCl + H2O + CO2 is a strong acid to make a weak acid.

Acid salt + alkali ===

Example: NaHCO3 NAOH=Na2CO3+H2O Basic Salt + Alkali ===

If there is no precipitated gas, it will not react.

Basic salt + acid ===

Example: imitation of Na2CO3 + 2HCl = 2NaCl + H2O + CO2 between the reaction of strong acid, weak acid, strong base, and weak base will be very different

Also, when you say acid salt, you really mean that this is called strong acid and weak alkali salt.

The alkaline salt is called a strong alkali and a weak salt, if it is a strong alkali and a strong salt, it is generally neutral and it is not easy to type, such as satisfaction, hope.