Can non metallic elements react with alkalis

Yes, the base is NaOH as an example. Halogen: R2+2NaOH=NaCl+Naro+H2O; R2 = Cl2,br,I2 3Cl2+6NaOH= =5NaCl+Naclo3+3H2O 3BR2+6NaOH=Slightly Heat=5Nabr+NaBro3+3H2O 3I2+6NaOH=Slightly Heat=5Nai+Naio32F2+2NaOH=2NaF+2Hf+O2 2F2+NaOH (20% mass fraction)=Naf+HF+of2 Oxogen:

Cold: 6NaOH+2S===2Na2S+Na2SO3+3H2O Hot: 6NaOH+2S=== 2Na2S+Na2SO3+3H2O Where there is more sulfur:

Na2S+S= Na2S2 Na2S+2S= Na2S3 (more) Na2S+3S= Na2S4 (more) Na2S+4S= Na2S5 (excess) And: Na2So3+S= Na2S2O3 (sodium thiosulfate) The solution will increase due to Na2Sx, X, and the solution will change from yellow to orange-red. SE is also basically similar, but it is difficult to produce polyse, TE and PO, I don't know about nitrogen group elements (non-metals):

2P4 (white phosphorus) + 3NaOH + 9H2O = heating = 5PH3 + NaH2PO4 (in fact, it is not very simple, in fact, this reaction mainly generates NaHPO2 first, and then disintegrates into NaH2Po4 and PH3, so in fact, this reaction can only occur as much as possible under strong heat conditions) Of course, there are many examples due to complexity. As ditto reaction but to heat. The only non-metals in group a are b

2B+2NaOH+6H2O==2NaB(OH)4+3H2, the reaction mechanism is very similar to that of Al and NaOH solution. C in group A does not react with NaOH and only Si in non-metals: Si + 2NaOH + H2O2 = = Na2SiO3 + 2H2 H2 in group A obviously cannot react with NaOH either.

1. Superactive metals (metals that rank before magnesium in the order of metal activity) can interact with alkalis, and the alkalis at this time are used as acids

2Na + 2NaOH = 2Na2O + H22, amphoteric metals can react with alkalis, and the resulting metal hydroxides are used as acids, the common ones are BE, Al, Ge, Zn, Sn, Pb:

ge + 2oh(-)h2o = geo3(2-) 2h2

1. The alkali solution can interact with the acid-base indicator The alkali solution turns blue when it encounters purple litmus test solution (the phenomenon is not obvious, but there is a change), and it turns red when it encounters a colorless phenolphthalein solution (the phenomenon is obvious) 2. Alkali can react with non-metallic elements Halogen and alkali disproportionation model reaction, such as: Cl2+2NaOH=NaCl+NaCl (Br2, I2 similar) Ashwagandha Sulfur and alkali disproportionation reactions, such as: 3s+6NaOH=Na2SO3+2Na2S+3H2O Silicon and alkali reactions, such as:

Si + 2NaOH + H2O = Na2SiO3 + 2H2 (gas) 3. Alkali can react with acid to form salt and water (this kind of reaction is usually called neutralization reaction, and this kind of reaction emits a lot of heat) For example: hydrated lime (calcium hydroxide) is commonly used in industry to neutralize wastewater containing excessive sulfuric acid Ca(OH)2+H2SO4=CaSO4+2H2O 4, alkali solution can react with non-metal oxides to generate salt and water For example, the most common reaction of this kind is the reaction of testing carbon dioxide with clarified lime water in the laboratory, but this kind of reaction is not a metathesis reaction CO2 + H2O==H2CO3 H2CO3 + Ca(OH)2==CaCO3 +2H2O Synthesis:

CO2 + Ca(OH)2==CaCO3 +H2O This reaction does not conform to the exchange of components between the two ionic compounds, so it is not a metathesis reaction 5. The alkali solution can react with salt to generate new alkali and new salt For example: this kind of reaction is common in the preparation of sodium hydroxide in the laboratory, and the reaction between alkali and salt has two requirements, one requires that the alkali and salt involved in the reaction should be soluble in water, and the other requires that there is precipitation, gas or water in the product. Ca(OH)2+Na2CO3=CaCO3 +2NaOH Note:

Reaction between lye and acidic oxides (1) Concept: can react with alkali; Oxides of salt and water are generated. For example, CO2, SO2, SiO2, SO3, Mn2O7, etc. are all acidic oxides.

2) Note: Acid oxides include most non-metal oxides and a few metal oxides (such as Mn2O7), it can be seen that acid oxides are not necessarily non-metal oxides, and a few non-metal oxides are not acid oxides, such as CO, H2O, etc. Most of the acidic oxides can be soluble in water and combine with water to form acid, and a few acidic oxides are insoluble in water and cannot react with water to form acid, such as SiO2.

The reaction between non-metallic elements and alkalis involves the following main first cavities:

The disproportionation reaction of halogens and bases, such as permeable celery: Cong stupid.

Cl2 + 2NaOH = NaCl + NaCl (Br2, I2 similar) Sulfur disproportionation reaction with alkali, such as:

3S+6NaOH=NaSO3+2Na2S+3H2O Reaction of silicon with alkali, such as:

Si + 2NaOh + H2O = Na2SiO3 + 2H2 (gas) of the above equations, the first one is the most important, and the last two are covered by some textbooks.

It reads as follows:

1. Sodium and sulfur are ignited to form sodium sulfide.

2. Sodium is formed in oxygen under ignition conditions.

3. Sodium oxide is generated in sodium and oxygen at room temperature.

1) Generally speaking, the metal element has a metallic luster, and most metals are silvery-white; Non-metallic elements generally do not have a metallic luster, and the colors are also varied.

2) Except for mercury, which is liquid at room temperature, other metal elements are solid at room temperature; Non-metallic elements are mostly gaseous at room temperature, and some are liquid or solid.

3) Generally speaking, the density of metals is higher and the melting point is higher; Non-metals are less dense and have a lower melting point.

Elemental metals are pure substances formed by the same metal elements. Elemental metals are a category of elemental substances. Deficit.

Elemental metals are pure substances formed by the same metal elements. Elemental metals are a category of . In general, the properties of elemental matter are closely related to the properties of its elements.

For example, the metallicity of many metals is obvious, so their elemental reducibility is very strong.

Elements with metallic commonality. There are more than 80 kinds of metal elements, similar in nature, mainly reducing, with smooth pins and cracks, good electrical and thermal conductivity, hardness, ductility, and generally solid at room temperature.

Common metals are potassium, calcium, sodium, magnesium, aluminum, zinc, iron, copper, silver, etc.

The reaction between metal elements and non-metal elements is: Fe + S = Fes, Cu + Cl2 = (ignition) = CuCl2, AlCl3 + 4NaOH (excess) = 2Naalo2 + 2H2O + 3NaCl, etc.

Non-metals are gases or brittle solids or liquids without metallic properties under normal conditions, such as the 15 elements in the upper right part of the periodic table and hydrogen, the elemental elements of group zero.

Metal is a substance with lustrous (i.e., strong reflection of visible light), malleable, easy to conduct electricity, heat and other properties. The vast majority of metal elements on Earth exist in nature in a chemical state.