Reagent used to eliminate permanent hardness:

One type of technology:

The following compound is used in medicine:

Reagent used for detecting carbon dioxide:

The name sodium bicarbonate corresponds to the formula:

Formula of phosphorus (III) oxide:

Formula of potassium nitrate:

Reagent for nitrate ion:

When the active metal interacts with a very dilute

nitric acid solution is used to restore

last mainly before:

The interaction of copper chips with concentrated nitric acid leads to

education:

You can prove the presence of ammonia by:

Negative degree of nitrogen oxidation in the compound:

Perhydrol is called a solution of hydrogen peroxide with a mass fraction of:

When diluting sulfuric acid, always pour the acid into the water.Dilution of conc. H28O4 sewing water to it is dangerous because:

Reagent for the thiosulfate ion:

H2SO4 name:

Sulfates detect:

Oxygen shows a positive degree of oxidation in the compound:

The following will not interact with hydrochloric acid:

Silver bromide precipitate is dissolved in:

Iodides form a color precipitate with a solution of silver nitrate

Hypochlorous acid has the formula

The most pronounced oxidative properties of:

Anion forming a white curd-like precipitate with silver cation, soluble in ammonium hydroxide:

Saline solution is a solution of:

Salt, which is hydrolyzed by anion:

Salts formed by a strong base and a weak acid have a medium reaction:

Weak electrolyte

Acidic environment:

Neutral environment:

Negative charged ions:

Positively charged ions:

The molar concentration is equivalent to the number of equivalents:

Molar concentration shows the amount of molar solute contained in :

Determine the % concentration of solutions, if it is known that 200g of the solution contains 10 g of zinc sulfate:

Determine the % concentration of the solution, if it is known that300 g of the solution contains 30 g of sodium chloride:

The coordination number of the complexer in the formula K4 [Ag (NH3)2] Cl:

Charge of the complexing ion in the compound K4 [Fe (CN)6]:

Charge of the complex ion in the compound KZ[Fe (CN)6]:

In alkaline solutions methylorange changes its color to:

Methylorange is formed In acid solutions:

In solutions of alkaline phenolphthalein formed:

In acid solutions, the litmus changes its color:

Of the following substances can be distinguished acid:

Acid oxide

Amphoteric justification:

Complex substances consisting of metal atoms and hydroxogroups are called:

Complex substances consisting of hydrogen atoms and acid residues are called:

Complex substances consisting of two elements, one of which is oxygen, are called