Question

Из приведённого списка выберите формулы оснований HCI KMnO4 Cr(OH)3 CaO NaOH H2CrO4 Zn(OH)2 Дайте им названия. Подчеркните формулы нерастворимых оснований.

Answer 1

Основания - Сr(OH)₃ гидроксид хрома 3 
                      NaOH гидроксид натрия
                      Zn(OH)₂ гидроксид цинка 2
Нерастворимые основания - Сr(OH)₃ гидроксид хрома 3
                                                 Zn(OH)₂ гидроксид цинка 2

Answer 2

Formulas and Names of Bases

The list of bases provided includes the following formulas:

1. HCI 2. KMnO4 3. Cr(OH)3 4. CaO 5. NaOH 6. H2CrO4 7. Zn(OH)2

Let's go through each formula and provide their names:

1. HCI - This is not a base. It is actually the formula for hydrochloric acid, which is an acid rather than a base.

2. KMnO4 - This is not a base either. It is the formula for potassium permanganate, which is an oxidizing agent and not a base.

3. Cr(OH)3 - This is a base. Its name is chromium(III) hydroxide.

4. CaO - This is not a base. It is the formula for calcium oxide, which is an alkaline earth metal oxide and not a base.

5. NaOH - This is a base. Its name is sodium hydroxide.

6. H2CrO4 - This is not a base. It is the formula for chromic acid, which is an acid rather than a base.

7. Zn(OH)2 - This is a base. Its name is zinc hydroxide.

To summarize, the formulas of the bases from the given list are Cr(OH)3, NaOH, and Zn(OH)2. The names of these bases are chromium(III) hydroxide, sodium hydroxide, and zinc hydroxide, respectively.

Please note that HCI and KMnO4 are not bases, and CaO and H2CrO4 are not neraстворимые (insoluble) bases.