Question

СРОЧНО!!!даю 100баллов!! Классифицируйте соли, данные в каждом варианте, по хи- мической природе. Напишите молекулярное, полное и сокращенное ионные уравнения реакции гидролиза для тех солей, которые под- вергаются гидролизу. Определите кислотность среды. І вариант K2CO3,KNO3, K2SiO3, K2SO4,KCI NaCI, NaNO3,NaNO2,Na2Si03, Na2CO3 Na2SO3, Na3PO4

Answer 1

Ответ на картинке

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Answer 2

Classification of Salts by Chemical Nature:

Salts can be classified into different categories based on their chemical nature. Some common classifications include:

1. Acidic Salts: These salts are formed when a weak acid reacts with a strong base. They have a pH value less than 7. Examples include ammonium chloride (NH4Cl) and sodium hydrogen sulfate (NaHSO4).

2. Basic Salts: These salts are formed when a weak base reacts with a strong acid. They have a pH value greater than 7. Examples include copper(II) hydroxide (Cu(OH)2) and aluminum hydroxide (Al(OH)3).

3. Neutral Salts: These salts are formed when a strong acid reacts with a strong base. They have a pH value of 7. Examples include sodium chloride (NaCl) and potassium nitrate (KNO3).

4. Double Salts: These salts are formed when two different salts crystallize together. Examples include potassium aluminum sulfate dodecahydrate (KAl(SO4)2·12H2O) and potassium sodium tartrate tetrahydrate (KNaC4H4O6·4H2O).

5. Complex Salts: These salts contain complex ions. Examples include potassium hexacyanoferrate(II) (K4[Fe(CN)6]) and sodium tetrathionate (Na2S4O6).

Hydrolysis Reactions of Salts:

Hydrolysis is a chemical reaction in which a salt reacts with water to produce an acidic or basic solution. The hydrolysis of salts can be classified into three types:

1. Neutral Salts: Neutral salts do not undergo hydrolysis because they are formed from the reaction of a strong acid and a strong base. Examples include sodium chloride (NaCl) and potassium nitrate (KNO3).

2. Acidic Salts: Acidic salts are formed from the reaction of a weak acid and a strong base. They undergo hydrolysis to produce an acidic solution. Examples include ammonium chloride (NH4Cl) and sodium hydrogen sulfate (NaHSO4).

- The molecular equation for the hydrolysis of ammonium chloride (NH4Cl) is: ``` NH4Cl + H2O → NH4OH + HCl ```

- The complete ionic equation for the hydrolysis of ammonium chloride (NH4Cl) is: ``` NH4+(aq) + Cl-(aq) + H2O(l) → NH4OH(aq)