Chemical formula of 6 valent elemental sulfur oxide

This question is intended to test the student's judgment of the valence state of non-metallic elements in their most ** oxides.

The valence state of a non-metallic element in its most ** oxide is generally the number of electrons in its outermost shell (with the exception of elements such as f).

There are 6 electrons in the outer shell of s, so its most ** state is +6 valence.

That is, there is SO3 (oxygen is -2 valence).

Answer] B Answer Analysis] Test Question Analysis: Oxide is composed of two elements, and one of them is a compound of oxygen, because Na2SO4 and H2SO4 are both composed of three elements, so it cannot be oxide; According to the principle of the algebraic sum of positive and negative valencies in compounds, the valency of binding O is -2 valence, the valency of S in SO2 is +4 valence, and the valency of S in SO3 is +6 valence. Therefore, choose B

Test point: Identification of oxides in terms of composition, calculation of valency of elements.

Comments: Proficiency in the concept of oxides and the calculation of elemental valency is the key to solving this question.

The valency of the SO3S element is +6, while the Valency of the O element is -2

So, there is 1 S element and 3 oxygen elements in the molecule, which is SO3

Because the oxide of element S also has SO2, the valency of element S is +4

SO3 sulfur trioxide.

Sulfur and two of the oxygen form a coordination bond, and the other oxygen shares two pairs of electrons to form a sulfur-oxygen double bond.

SO3 electronic high school can't draw.

+6 valence sulfur element H2SO4.

Sulfur is a non-metallic element, chemical symbol S, atomic number 16, sulfur is one of the oxygen group elements (group A), located in the third period of the periodic table.

Elemental sulfur is usually a yellow crystal, also known as sulfur. There are many kinds of side-balanced allotrope bucket bodies of sulfur element, including orthorhombic sulfur, monoclinic sulfur and elastic sulfur. Sulfur is usually found in the form of sulfides, sulfates, or elemental substances in nature.

Sulfur is insoluble in water, slightly soluble in ethanol, and soluble in carbon disulfide.

Sulfur is an important component of proteins in the human body and is of great significance to human life activities. Sulfur is mainly used in the production of fertilizers, gunpowder, lubricants, pesticides and antifungals.

The sulfur dioxide produced by the combustion of sulfur and sulfur-containing ores combines with water in the air to form sulfurous acid, and the sulfurous acid reacts with the oxygen in the air to form sulfuric acid, thus causing sulfuric acid rain.

To humans, elemental sulfur is usually non-toxic and harmless, while other sulfur-containing compounds may be toxic, such as sulfides, which are generally more toxic.

Asia's largest sulfur production base and the world's three largest natural gas desulfurization plants are located in Dazhou.

Physical Properties: Density: g cm3

Boiling point : melting point :

Colour : Yellow.

Chemical formula of +6 valent sulfur oxide: SO3

Because +6 valence is required, o is -2 valence, according to the valency algebra sum is o, so the chemical formula of 6-valent sulfur element oxide: so3

According to [in a compound, the algebraic sum of the positive and negative valencies of each element is zero] [the valency of the elements in the element is zero].

Derivation: To show +6 valence.

It can't be elemental. Therefore, it is necessary to form a formula in which the sulfur element appears +6 valence.

The valency of SO3 oxygen is -2, and the valency of sulfur is xx+(-2)·3=0

The solution is x=+6

The hexavalent sulfur element is SO3

Do not spray copy the Google Translate translation results.

The sulfur elements in H2SO4, acidic KMno4 and SO3 are all positive hexavalent.

Summary. Hello, sulfur dioxide and trivalent chromium ions do not react. However, sulfur dioxide can undergo redox reactions with hexavalent chromium by the following equation:

In the reaction of 3SO2CRO4 4H3SO4 2CR2HO, hexavalent chromium is reduced to trivalent chromium by sulfur dioxide.

Hello, sulfur dioxide and trivalent chromium ions do not react with fibers. However, sulfur dioxide can be oxidized and reduced with hexavalent chromium, and the equation is as follows: 3SO2CRO4 4H3SO4 2CR2H O reaction, in which hexavalent chromium is reduced to trivalent chromium by sulfur dioxide.

Hope mine can help you.

1) The valency of sulfur, hydrogen and oxygen and the algebraic sum of each element in the compound are 0, and the chemical formula of hydrogen sulfide is: H2S; The chemical formula of the oxide of the +6 valent sulfur element is: SO3;

2) As can be seen from the figure, there are 1 sulfur dioxide molecule and 2 hydrogen sulfide molecules before the reaction, and after the reaction, 3 sulfur atoms and 2 water molecules are generated, which are expressed in chemical terms as socks :) 3s; 2h2o；

The type and number of atoms before and after the reaction remain unchanged, which conforms to the law of conservation of mass;

3) Hydrogen sulfide and sulfur dioxide react to form sulfur and water, and the chemical equation of the reaction is: 2H2S+SO2 2H2O+3S;

After a period of time, it can be observed that the inner walls of the two gas collector cylinders are attached to light yellow solid particles, indicating that the molecules have the physical property of continuous motion.

According to the chemical equation of the reaction 2H2S+SO2 2H2O+3S, the ratio of the number of hydrogen sulfide molecules and sulfur dioxide molecules participating in the reaction is 2:1, and the number of gas molecules in the two gas cylinders before the reaction is the same

So the answer is: 1) h2s; so3；

2）①3s；2h2o；Yes;

3）①2h2s+so2═2h2o+3s↓；constant exercise; ③so2；

Question B analysis: Oxide is composed of two elements, and one of them is a compound of oxygen

SO and HSO

All are composed of three elements, so they cannot be oxides; Then, according to the principle of the algebraic sum of the positive and negative valencies in the compound, the valency of the bound O is -2 valence, and it can be seen that so

The valency of S is +4 valence, so

The valency of the medium s is +6 valence. Therefore, choose B

Comments: Proficiency in the concept of oxygen and the calculation method of elemental valence is the key to solving this question. Next to celery.

a. According to the algebraic sum of positive and negative valency in the compound is zero, the oxygen element is -2, and the valency of the sulfur element is x, so can be known

The valency of medium sulfur element: x+(-2) 3=0, then x=+6

b. According to the algebraic sum of positive and negative valency in the compound is zero, the hydrogen element is +1, the oxygen element is -2, and the valency of sulfur silver permeate is y, and h can be known

The valency of sulfur in SO: (+1) 2+y+(-2) 4=0, then y=+6

c. According to the algebraic sum of positive and negative valency in the compound is zero, sodium is +1, oxygen is -2, and the valency of sulfur is z, and Na can be known

The valency of sulfur in SO: (+1) 2+z+(-2) 4=0, then z=+6

d. According to the algebraic sum of positive and negative valency in the compound is zero, hydrogen is +1, oxygen is -2, and the valency of sulfur is m, and h can be known

The valency of sulfur in SO: (+1) 2+m+(-2) frontal ridge 3=0, then m=+4

Therefore, d

First of all, the common valence state of sulfur is less than -2,+4 and +6,+2 (e.g., so), which is not considered.

2-valent (such as H2S), which exists in the form of sulfur ions, or sulfide.

4 and +6 valences are oxygenated acids, called sulfites or sulfates. +4 is sulfur.

SO2· H2O, a sulfur dioxide hydrate formed by sulfur dioxide dissolved in water, is called sulfurous acid. The sulfurous acid molecule H2SO3 is not present in the solution. Sulfurous acid is a strong acid in the binary state, which is generally treated as a weak acid and belongs to a weak electrolyte.

Molecular Formula: H2SO3

4 and +6 valences are oxygenated acids, called sulfites or sulfates. +4 is sulfide Valency is +4 Hope satisfied and happy to you.