Why can strong acids be packed in glass? Isn t it possible to react with silicate?

Silica can only react with the only acid, hydrofluoric acid, which is a weak acid but is highly corrosive (highly permeable). The reaction with silicate is the principle of using strong acid to make weak acid, but it can only be silicate, and silica is an oxide of silicon, not a salt, so the acid cannot react with silica (glass).

Because silica is an acidic oxide, it can react with alkali, but the inner wall of the glass bottle is very smooth, and the alkali almost does not react with it, so it can be filled with alkali, and the alkali can only be used with a rubber stopper, not with a glass stopper, and the surface of the glass stopper is very rough and can react with the alkali (for example: sodium hydroxide in a glass bottle, if you use a glass stopper, the sodium hydroxide will react with the glass stopper, and the sodium silicate (water glass) generated will stick the glass bottle and the glass stopper together, and you will not be able to open it).

Feel free to ask.

Strong acid can not react with silicate, glass is silica, silica can only react with hydrofluoric acid, can not react with other acids, and the reaction with strong alkali will stop for a while, as long as the glass plug is not used to install strong alkali.

Because the inner wall of the glass bottle is very smooth, it can be seen that the contact area between it and the strong alkali is very small, so it basically does not react and can be filled.

However, you can't use frosted glass stoppers, because the surface of frosted is rough, and it is easy to react with strong alkalis.

Of course, the glass can be installed with very weakly alkaline tea, and the tea can dissolve the glass on a solid foundation, can your esophagus and stomach stand it?

There seems to be something wrong with your understanding, the salts of oxygenated acids can be expressed in the form of acidic oxides plus basic oxides, and silicates are expressed in the oxide form only for convenience, and their properties cannot be inferred from this. Taking sodium silicate as an example, it is generally written as sodium silicate nine hydrate, in fact, it only has eight crystal water, and one is structural water, which is dissolved in water is water glass, it is a strong alkali and weak salt, which can not react with alkali, but can only react with carbonic acid and hydrochloric acid, which are stronger than silicic acid, and is very simple to make a strong acid to make a weak acid.

Silicates can react with acids to obtain silicic acid (precipitate), silica cannot react with most strong acids, and can react with some strong bases.

Metal oxides can generally react with strong acids, some undergo metathesis reactions, and some undergo redox reactions.

Chemically, silicates refer to compounds (sixoy) composed of silicon and oxygen, and sometimes one or more metals and/or hydrogen. It is also used to denote salts produced by silica or silicic acid.

Most silicates are insoluble.

Yes, but the reaction is very weak, and the strong acid with a large concentration is obvious.

Silicates can react with strong acids. Silicic acid is obtained.

Glass is molten silica SIO, is metasilicate, SIO (quartz sand) is a natural mineral material, chemically inert, resistant to acid and alkali corrosion at room temperature, only hydrofluoric acid (HF aqueous solution) can significantly corrode it, other acids do not react with it.

Reagent bottles are generally made of silicate glass. Portland glass is made of quartz sand, soda ash, feldspar and limestone as raw materials, which are mixed, melted and homogenized at high temperature, processed into shape, and then annealed. The reaction between silica and sodium hydroxide is correct in high school knowledge, but it is not a direct reaction, because the glass surface is a very stable silicate substance after processing, so the glass bottle can be used to hold alkaline substances.

If a glass cap is added to the reagent bottle, the glass cap is usually frosted to close the cap, and the stable layer on the surface of the reagent bottle is worn off, and the alkaline substance can erode the place, forming a gelatinous substance that sticks to the lid and affects the use of the reagent bottle.

First of all, the main component of glass is silicate, that is, silica, which is very stable and does not react with nitric acid. The only reaction with glass is usually hydrofluoric acid (HF).

Alkaline drugs such as sodium hydroxide cannot be bottled in glass bottles.

Nitric acid does not react with silica (one of the main components of glass is silica and not sodium silicate).

The main component of glass is silica, which is the main one, so nitric acid can be used.

The essence of acid burettes and test tubes is glass, i.e. silicate. However, the burette is made into a grinding mouth in order to keep close contact at the piston, which is easy to be corroded by the lye and stick together, so the surface of the test tube is smooth, so it should not be corroded, so the test tube can be filled with lye, and the acid burette can not.

Silicates themselves do not react with hydrochloric acid.

Glass is easy to be corroded by alkaline solutions, and there is also a special one in the acid, which is hydrofluoric acid HF

The ceramic material is silicate, which does not react chemically with hydrochloric acid and carbonic acid, and the chemical properties of silicate are very stable and resistant to high temperatures.

No, glass cannot contain HF hydrofluoric acid

Also, the reason why you can't put alkali is that glass is a silicate product, and silica is an acidic oxide, which can react with alkaline substances, so you can't put alkali.

Strong alkalis such as NAOH react with silica in glass.

In layman's terms, they corrode glass and produce something like sticky glue.

Generally, the main component of glass is silica, and the same is true for the surface of glass. With the exception of hydrofluoric acid, glass does not react with acids. The reaction speed with strong alkali is slower, so it can still be used to hold strong alkali.

However, for grinding bottles, after the mouth of the bottle and the stopper are sanded, the surface area is greatly increased, and the reaction speed is also greatly increased when it comes into contact with strong alkali, and the generated silicate is quickly filled and cemented in the gap between the grinding bottle and the stopper, which makes the stopper extremely difficult to open, so the bottle containing strong alkali does not use the frosted stopper.

Silica is an acidic oxide that does not react with ordinary acids (except hydrofluoric acid) and does not react with water. Silicates and water are formed by reacting with a hot, concentrated alkali solution or molten alkali. It reacts with a variety of metal oxides at high temperatures to form silicate.