What is K K reaction and what does k mean in chemistry?

Reaction: k=c p(c)*c q(d) c m(a)*c n(b)k in aglycone-(2,6-dideoxysaccharide) x-(d-glucose) chemistry is the chemical symbol for potassium. Potassium is a silvery-white, soft metal, waxy, cut with a knife, with a low melting boiling point, less dense than water, and extremely chemically reactive.

It is one of the elements of group A and belongs to alkali metals. Potassium does not exist in a single form in nature, and potassium is widely distributed in the form of salt on land and in the sea, and is also one of the important components in human muscle tissue and nerve tissue.

Reaction: Aglycone-(2,6-dideoxysaccharide) x-(d-glucose).

Production of sodium metal.

Electrolysis is used, but in the production of potassium metal.

This method cannot be used because potassium is too easily dissolved in molten KCl to be separated and collected. The production method of potassium metal uses sodium metal and potassium chloride.

Reaction at high temperatures: Na+KCl=K+NaCl. Potassium has a lower boiling point than sodium, and the reaction can be carried out continuously by continuously separating the potassium vapor.

The purity of potassium can be increased by vacuum distillation to: Because potassium is more expensive than sodium, sodium is generally used instead of potassium, and potassium salt is used less, but because potassium salt is less hygroscopic than sodium salt, potassium salt is commonly used as a standard reagent in analytical chemistry.

Related information

Potassium, element symbol k, atomic number.

is 19 and is located in the periodic table.

The fourth period is group ia, which belongs to alkali metal elements.

Elemental is a silvery-white soft metal, waxy, can be cut with a knife, has a low melting and boiling point, is less dense than water, and is extremely chemically reactive (more reactive than sodium).

Potassium does not exist in its elemental form in nature.

It is widely distributed in the form of salt on land and in the sea, and is also one of the important components of human muscle tissue and nervous tissue.

The above information reference: Encyclopedia - Potassium.

Keller-Kiliani (K-K) reaction.

As an identification reagent: There is a free or hydrolyzable 2 deoxysaccharide reagent in the structure: ferric chloride, glacial acetic acid, concentrated sulfuric acid, and color development: the acetic acid layer is blue or blue-green

1. K: The chemical equilibrium constant refers to the fact that at a certain temperature, the reversible reaction starts from the positive reaction or the reverse reaction, regardless of the initial concentration of the reactants, and finally reaches equilibrium.

In this case, the ratio of the product of the stoichiometric power of the concentration of each product to the power of the stoichiometric concentration of each reactant is a constant, which is expressed by k, and this constant is called the chemical equilibrium constant. The equilibrium constant generally has a concentration equilibrium constant and a pressure equilibrium constant.

For the general reversible reaction, MA+NB, PC+QD

k=( c)^p * d)^q )/a)^m * b)^n )；Wherein: (a), (b), (c), (d), etc., indicate the concentration of substances a, b, c, d at equilibrium.

2. Q: Concentration quotient, indicating the reaction process. There is a concentration quotient q at any time, but only at equilibrium it is k.

The formula is the same as k, where (a), (b), (c), (d), etc., indicate the concentration of substances a, b, c, d at that time.

The k-value can be used as a criterion to determine whether the ongoing reversible reaction is equilibrium and where to establish equilibrium when it is not equilibrium.

qk: The reaction proceeds in the direction of the reverse reaction.

The chemical substance represented by kh in chemistry is potassium hydride.

KH Introduction: Gray-black powder. The product is a 35% suspension dispersed in mineral oil. Sensitive to moisture. Hydrolysis. Both heating and water can release flammable gases. Corrosive.

Properties:1Properties: white needle-like crystals, the commodity is gray powder, semi-dispersed in oil.

2.Melting point (decomposition, ) 316

3.Relative density (water = 1):

4.Solubility: insoluble in liquid ammonia, carbon disulfide.

When the equilibrium constant is greater than 10 to the 5th power, the reaction is considered complete.

The equilibrium constant refers to the fact that at a certain temperature, the reversible reaction starts from the positive and negative impulse or the reverse reaction, and does not consider the initial concentration of the reactants, and finally reaches equilibrium, at this time, the ratio of the product of the stoichiometric power of the concentration of each product to the stoichiometric power of the concentration of each reactant is a constant, which is expressed by k, and this constant is called the chemical equilibrium constant.

The magnitude of the equilibrium constant k value indicates the degree to which the reaction is carried out, and the larger the k value, the greater the ratio of the product concentration to the reactant concentration at the equilibrium time, that is, the more complete the reaction is carried out, and the higher the conversion rate of the reactant.

k: The chemical equilibrium constant refers to the fact that at a certain temperature, the reversible reaction starts from the positive reaction or the reverse reaction, and regardless of the initial concentration of the reactants, and finally reaches equilibrium.

In this case, the ratio obtained by dividing the product of the stoichiometric powers of the concentrations of each product by the product of the stoichiometric powers of the concentrations of each reactant is a constant.

k’：k'It is called the conditional stability constant, and it is generally used in complexation reactions to perform correlation calculations. k in the rebalancing problem'In the precipitate dissolution equilibrium, k'Such as LGK'my＝lgkmy-lgαm-lgαy

k Chemical equilibrium constant. The chemical equilibrium constant refers to the reversible reaction at a certain temperature, whether it is positive or negative.

Should it start, or start from the reverse reaction, regardless of the initial concentration of the reactants, and finally reach equilibrium, then the ratio obtained by the product of the stoichiometric power of the concentration of each product divided by the product of the stoichiometric power of the concentration of each reactant is a constant, which is expressed by k, and this constant is called the chemical equilibrium constant.

k'It is called the conditional stability constant, and it is generally used in complexation reactions to perform correlation calculations.

Such as LGK'my＝lgkmy-lgαm-lgαy