Write 20 gas generating gases, 20 precipitation generating 10 other metathesis reaction equations

(1) CO2+H2O is equivalent to carbonic acid!

2) Carbonic acid is greater than hypochlorous acid!

3) Nacio + H2CO3 ==> salt and acid react to form new salt new acid!

4) The new acid HCIO is a very weak acid that is difficult to ionize and does not react with NaHCO3!

5) The water generated by metathesis reaction is also a substance that is difficult to ionize!

4 metathesis reactions to generate gas:

na2co3 + 2hcl = 2nacl + h2o + co2↑na2co3 + h2so4 = na2so4 + h2o + co2↑

nahco3 + hcl = nacl + h2o + co2↑2nahco3 + h2so4 = na2so4 + 2h2o + 2co2↑

Generate 2 kinds of metathesis anti-vertical empty residual (I only know 2 remainders):

ba(oh)2+cuso4 = cu(oh)2↓+baso4↓mgso4+ba(oh)2 = baso4↓+mg(oh)2↓

hcl+naoh=nacl+h2o

hi+naoh=nai+h2o

hcl+koh=kcl+h2o

Generally neutralized).

na2s+2hcl=2nacl+h2s↑

NaOH+NH4Cl=NaCl+H2O+NH3 (heated) (simple, lab-made ammonia).

CaCO3+2HCl=CaCl2+H2O+CO2 (laboratory-produced carbon dioxide).

BACl2+mgSO4=mgCl2+BASO4 (screening to test sulfate).

MgCl2 + Ba(OH)2 = Mg(OH)2 + BaCl2 (test the reaction of hydroxide).

agno3+nacl=agcl+nano3 (test halide ions).

1) Barium chloride reacts with sulfuric acid;

3) Hydrogen sulfide reacts with sodium hydroxide. Generate precipitate. Generate gas, generate water:

1) Sulfuric acid reacts with sodium hydroxide:

1) Sulfuric acid reacts with sodium sulfide.

2) Hydrochloric acid reacts with sodium carbonate.

3) Sodium sulfite reacts with hydrochloric acid.

3；3) magnesium chloride reacts with sodium hydroxide;

2) Hydrochloric acid reacts with potassium hydroxide.

Write the specific equation yourself;

2) silver nitrate reacts with sodium chloride; 2。

HCl+AG2CO3 AGCL +H2O+CO2 (untrimmed), HCl+AG2SO3, AGCL +H2O+SO2 (untrimmed), H2SO4+BAC3, BASO4 +H2O+CO2, H2SO4+BASO3, BASO4 +H2O+SO2 (General H[]+CO3(SO3) [H2O+CO2(SO2)].

Just change it to one that can form a precipitate...）

A few more:

NH4)2SO4+BA(OH)2 BASO4 +H2O+NH3 (unmatched, ammonium bisulfate is also OK) The top four equations replace carbonate and sulfite with bicarbonate, and bisulfite is several....

Upstairs attention is a metathesis reflection...!

I thought of some for the time being, and I will add later.

To metabolize the reaction? Please ignore it.

na2s2o3 + 2hcl = 2nacl + s↓ +so2↑ +h2o

2pbo2 + 2h2so4 = 2pbso4↓ +o2↑ +2h2o

3cus + 8hno3 = 3cu(no3)2 + 2no↑ +s↓ +4h2o

ba(hso4)2 + na2co3 = baso4↓ +na2so4 + h2o + co2↑

SN + 4HNO3 (concentrated) = SNO2 +4NO2 +2H2O

Because the metathesis reaction can only take place if a precipitate or gas or water is formed, otherwise the two substances do not react.

The metathesis intra-compound reaction is a reaction in which two volumes of compounds exchange components with each other to produce two other compounds. The essence of the metathesis reaction is that the two substances that undergo the metathesis reaction exchange ions in the aqueous solution and combine into substances that are difficult to ionize - precipitation, gas or weak electrolyte (most commonly water), so that the ion concentration in the solution is reduced, and the chemical reaction is carried out in the direction of the ion concentration reduction.

It can be abbreviated as ab+cd=ad+cb.

No matter what the reaction is, it is necessary to follow the strong to ascend, not to be weak to strong.

Like strong acids produce weak acids, weak acids cannot produce strong acids.

HCl+AG2CO3 AGCL +H2O+CO2 (untrimmed)HCl+AG2SO3 AGCL +H2O+SO2 (unbalanced)H2SO4+BAC3 BASO4 +H2O+CO2 H2SO4+BASO3 BASO4 +H2O+SO2 General H【】+CO3(SO3) [H2O+CO2(SO2) Just change it to form a precipitate....）

A few more:

NH4)2SO4+BA(OH)2 BASO4 +H2O+NH3 The top four equations replace carbonate and sulfite with bicarbonate, and there are several kinds of bisulfate....

Upstairs attention is a metathesis reflection...!