Reactive metal reacts with acid why not add water

Because the hydrogen ions in the acid are more reactive than the hydrogen ions in the water Under acidic conditions, the ionization of water is inhibited, and the hydrogen ions ionized by water are reduced, making it more difficult to react with the reactive metal, in contrast, the hydrogen ions ionized by the acid are more likely to react with the metal. After learning chemistry, it is not difficult to find that chemical reactions are very "smart", it is very direct, very good at walking in a straight line, when encountering lively and sub-active substances, he will not react with both, but all and lively reactions, which should be a basic law. Therefore, in the state of coexistence of hydrogen ions of acid and hydrogen ions of water (that is, acidic solution), the active metal ignores water and reacts directly with acid, while the chemical equation is to show the actual reaction process, and the actual reaction with the acid is written, so the equation is written as acid, not water...

Hand hit, look.

Because the reactive metal is actually reacting with H+ in solution, this H+ can be H+ ionized by acid

It can also be H+ ionized by H2O, and when there is no acid, H+ is produced by water, so there is water in the reaction.

When there is acid, H+ is ionized by acid, and the metal is equivalent to reacting with acid, and there is no water in the reaction formula.

What do you do with water? The reaction of sodium with water can be seen as a reaction with hydrogen ions in water, then in the presence of acid, the acid provides more hydrogen ions, so it reacts with the acid first. Or understand, react with water to get a base, and react with acid.

When water is added, the reactive metal reacts with water instead of acid.

Elemental metal + acid = = salt + hydrogen (Displacement reaction）。Reaction of zinc and dilute sulfuric acid: Zn+H2SO4==ZnSO4+H2; Reaction of Shanqiao liquid magnesium and dilute sulfuric acid:

mg+h2so4==mgso4+h2↑。

Reaction of aluminum and comma dilute sulfuric acid: 2Al+3H2SO4==Al2(SO4)3+3H2; Reaction of zinc and dilute hydrochloric acid: Zn+2HCl==ZnCl2+H2; Magnesium and dilute hydrochloric acid reaction:

mg+2hcl==mgcl2+h2↑；Reaction of aluminum and dilute hydrochloric acid: 2Al+6HCl==2AlCl3+3H2. The above phenomenon is the formation of air bubbles.

Sulfuric acid storage FAQs.

1. Store in a cool, naturally ventilated warehouse. The storage temperature does not exceed 35, and the air humidity.

No more than 85%. Maintain container tightness.

2. Avoid soul-attracting lamps and pyrogens, and prohibit smoking in the workplace.

3. Avoid steam leaking into the workplace air.

4. Prevent with oxidants, alkalis, and alkaline earth metals.

Touch. 5. When transporting, it should be lightly unloaded to avoid damage to the packaging and containers.

Assuming that the active metal is magnesium and the acid is hydrochloric acid, the chemical equation is mg+2HCl=mgCl2+H2

The acid dispersion of the same is not different, the acid is divided into one element, two yuan, three yuan, etc., and the metal activity is different.

Hydrogen is oxidized to obtain hydrogen.

m+2h+==m2++h2

Acids can react with reactive metals, i.e., metals can replace hydrogen from acids, and metals enter the solution to produce corresponding salts and waters.

Chemical equation for the reaction of vinegar with active metals. Usually the corresponding acetate and hydrogen gas are produced. For example, the chemical reaction between vinegar and metallic zinc produces zinc acetate and hydrogen. In other words, this is a reaction that displaces the leakage of hydrogen.

In fact, it is a typical displacement reaction, the active metal reacts with the acid to form the salt corresponding to the active metal, and the slag lifting hydrogen gas, but considering that the active gold such as sodium methyl glycoside will react directly with the water after encountering water, we generally do not directly consider the reaction between it and the acid.

Elemental metals.

Acid - salt + hydrogen (displacement reaction).

Zinc reacts with dilute sulfuric acid: zn

h2so4==znso4

H2 magnesium reacts with dilute sulfuric acid: mg

h2so4==mgso4

H2 Reaction of aluminium with dilute sulphuric acid: 2al

3h2so4

=al2(so4)3

3H2 Zinc reacts with dilute hydrochloric acid: Zn

2hcl==zncl2

H2 magnesium reacts with dilute hydrochloric acid: mg+

2hcl==mgcl2

H2 Aluminum reacts with dilute hydrochloric acid: 2Al

6hcl==2alcl3

3h2 (bubble phenomenon).

Iron reacts with dilute hydrochloric acid: Fe

2hcl==fecl2

H2 Iron reacts with dilute sulfuric acid: Fe

h2so4==feso4

H2 (there is a bubble phenomenon, the solution will change from colorless to light green).

I memorize the order of metal activity, and the metal in front of hydrogen except cesium, rubidium, potassium, radium, barium, strontium, calcium, sodium.

For example, magnesium, aluminum, titanium, vanadium, manganese, zinc, chromium, gallium, iron, cadmium, cobalt, nickel, molybdenum, tin, lead, etc. can be replaced with dilute sulfate.

Nitric acid, concentrated sulfuric acid is another matter, they are strongly oxidizing.

Feel free to ask.

1. Zinc reaction with dilute hydrochloric acid: Zn+

2hclzncl2+h2

Bubbles are formed, and the zinc particles gradually decrease.

2. Zinc reaction with dilute sulfuric acid: Zn+

h2so4znso4+h2

3. Iron reacts with dilute hydrochloric acid: Fe+

2hclfecl2+h2

There are bubbles produced and the iron gradually decreases.

4. Iron reacts with dilute sulfuric acid: Fe+

h2so4feso4+h2

The solution turns light green.

5、al+3h2so4

al2(so4)33h2al

6hcl2alcl3

3h2↑

1) The acid solution can react with the acid-base indicator. The purple litmus test solution turns red when it meets acid, and the colorless phenolphthalein test solution does not change color when it meets acid. The substance that excites attention to the color development is the indicator.

2) Acids react with a variety of reactive metals, usually to produce salts and hydrogen. Only metals that precede hydrogen in the order table of metal activity can react with dilute acids (HCl, H2SO4) to produce hydrogen. The metal located after hydrogen cannot react with dilute acids (HCl, H2SO4), but can react with concentrated sulfuric acid and concentrated nitrate acid.

For example: Cu 2H2SO4 (concentrated) CuSO4 SO2 2H2O

3cu 8hno3 (dilute) 3cu(NO3)2 2NO open disturbance to do 4h2o

It can be seen that no hydrogen is produced in the reaction of metals with concentrated sulfuric acid and nitric acid, which is why the laboratory cannot use concentrated sulfuric acid and nitric acid to react with zinc to produce hydrogen.

3) Acids can react with basic oxides to form salt and water: H2SO4 + CAO ==CASO4 + H2O

4) Acids can react with certain salts to form new acids and salts: H2SO4 + BACL2 ==BaSO4 + 2HCl

5) Acid and alkali neutralization reaction to form salt and water: H2SO4 BA(OH)2 ==BASO4 (white precipitate) 2H2O

Acids react with active metals, typically to form salts and gases. Salt refers to a class of metal ions or ammonium ions (NH4+) combined with acid ions (or non-metallic sons) of the combination of the conglomerate, such as sodium chloride, calcium nitrate, ferrous sulfate and ammonium acetate, calcium sulfate, copper chloride, sodium acetate, etc., generally speaking, salt is the product of metathesis reaction, salt and salt reaction to form new salt and new salt.

Chemically, acid refers to compounds that are hydrogen ions produced when ionized in an aqueous solution, and can be divided into inorganic acids and organic acids. According to the acid-base proton theory, substances that can release protons are collectively called acids.

Lewis acid-base theory holds that electrophiles or electrons are both Lewis acids.