A few chemical equations in the third year of junior high school All chemical equations in the third

The chemical equation for the reaction of brass with dilute hydrochloric acid to form hydrogen gas: Zn + 2HCl = H2 + ZNCL2

Iron reacts with hydrochloric acid to form ferrous chloride and hydrogen: Fe + 2HCl = FeCl2 (ferrous chloride) + H2

Iron reacts with hydrochloric acid to form ferric chloride and hydrogen: 2Fe + 6HCl = 2FeCl3 (ferric chloride) + 3H2

Zinc reacts with dilute hydrochloric acid to form zinc chloride and hydrogen: Zn+2HCl=ZnCl2+H2

Boron reacts with water to form boron hydroxide and hydrogen: 2b 6h2o 2b (oh)3 3h2

Hydrogen is generated from rusty magnesium strips and dilute hydrochloric acid: MGO + 2HCl = MGC2 + H2O MG+2HCl = MGCl2 + H2

At high temperature, iron reacts with water vapor to form hydrogen: 3Fe + 4H2O = High temperature = Fe3O4 + 4H2

Aluminum reacts with sodium hydroxide solution to generate hydrogen: 2Al+2NaOH+2H2O=2Naalo2+3H2

Zinc reacts with dilute sulfuric acid to generate zinc sulfate and hydrogen: Zn+H2SO4---ZNSO4+H2

fe+h2so4---h2+feso4

zn+h2so4---h2+znso4

And so on and so forth.

2h2o---2h2+o2

Power. 2NaCl+2H2O---2NaOH+Cl2+H2 energized. 3Fe + 4H2O --- Fe3O4 + 4H2 high temperature.

2al+2h2o+2naoh---3h2+2naalo22na+2h2o---2naoh+h2

CO+H2O==High Temperature==CO2+H2

CH4 (methane) == high temperature == C (carbon) +2 H2 (hydrogen) These are all different principles. There may be those in junior high school who have not learned, and if the teacher really asks them to write nine, it is estimated that the reactions of zinc, iron and acid are counted as two.

fe+h2so4==feso4+h2

C+H2O(High Temperature)==CO+H2

2h20 (energized) ==2h2+o2

zn+h2so4==znso4+h2

2NaCl+2H2O (energized) ==2NaOH+H2+Cl2Si+4HF==SIF4+2H2

si+4h20+2naoh==na2siO3+3h2o+2h2si+2naoh+h2o==na2siO3+2h22al+2h2O+2naoh==2naalo2+3h2I don't know if it's okay to belong to the same type of reaction I try not to write the same type of reaction I hope it can help you Hehe.

2H2O = energized = 2H2 + O2 (arrows add by themselves, the same below) 3Fe + 4H2O = high temperature = Fe3O4 + 4H22NaCl + 2H2O = energized = 2NaOH + H2 + Cl2CH4 = 1000-1500 degrees = C (carbon black) + 2H2CH4 + H2O = 800 degrees = CO + 3H2

2na+2h2o=2naoh+h2

fe+2hcl=fecl2+h2

2c2h5oh+2na=2c2h5ona+h22nah+2h2o=2naoh+2h2

zn+2hcl=h2↑+zncl2

3Fe + 4H2O = High temperature = Fe3O4 + 4H2 2H2O = energized = 2H2 + O2

2NaCl + 2H2O = energized = 2NaOH + H2 + Cl2 2Al + 3H2SO4 = 3H2 + Al2 (SO4) 3mg + 2HCl = MgCl2 + H2

zn+h2so4=znso4+h2↑

C+H2O(High Temperature)==CO+H2

fe+2hcl=fecl2+h2↑

Magnesium, iron, zinc, aluminum, reacted with hydrochloric acid or sulfuric acid, 8 pcs.

Water electrolysis produces hydrogen and oxygen, sodium metal reacts with water to form sodium hydroxide and hydrogen, and potassium reacts with water to form potassium hydroxide and hydrogen.

Hydrogen peroxide is electrolyzed to produce hydrogen and oxygen.

Both pre-hydrogen metals can react with acids to form hydrogen. The order of activities is available in your chemistry book! There are also in addition to the active ones. Potassium, calcium, sodium. They react with water in acid to produce oxygen. Everything else!

Add these two, I remember when I was doing the question.

CaH2+2H2O=Ca(OH)2+2H2 Electrolytic saturated saline:

2nacl+2h2o=2naoh+cl2↑+h2↑

In fact, there are so many chemical formulas to remember.

It's a waste of time.

You can't remember that much!

It's important to understand.

Balancing. Trim pays attention to the conservation of mass, if it will not be trimmed.

Remember: 1 salt. Salt.

Two new salts. 2 alkalis. Salt.

Another alkali. Another salt. 3 acids. Salt.

Another acid. Another salt. 4 acids. Alkali.

Salt. Water. That's about it.