Question

Соль+щелочь=основания+новая соль

Answer 1

CuSO4+2NaOH=Cu(OH)2↓ + Na2SO4

Answer 2

СuSO4 +2 NaOH =Cu(OH)2 + Na2SO4

Answer 3

Chemical Reaction: Salt + Alkali = Base + New Salt

When salt and alkali react, they can form a base and a new salt. The specific reaction depends on the specific salt and alkali involved. Here are a few examples:

1. Sodium chloride (NaCl) + water (H2O) + alkali → hydrogen gas (H2) + chlorine gas (Cl2) + sodium hydroxide (NaOH). 2. Iron(II) sulfate (FeSO4) + alkali → iron(II) hydroxide (Fe(OH)2) + sodium sulfate (Na2SO4). 3. Iron(III) chloride (FeCl3) + sodium hydroxide (NaOH) → iron(III) hydroxide (Fe(OH)3) + sodium chloride (NaCl).

It's important to note that these reactions are just a few examples, and there are many other possible reactions depending on the specific compounds involved.

Chemical Equations:

1. Sodium chloride (NaCl) + water (H2O) + alkali → hydrogen gas (H2) + chlorine gas (Cl2) + sodium hydroxide (NaOH): ``` 2NaCl + 2H2O + 2NaOH ```

2. Iron(II) sulfate (FeSO4) + alkali → iron(II) hydroxide (Fe(OH)2) + sodium sulfate (Na2SO4) ``` FeSO4 + 2NaOH → Fe(OH)2 + Na2SO4 ```

3. Iron(III) chloride (FeCl3) + sodium hydroxide (NaOH) → iron(III) hydroxide (Fe(OH)3) + sodium chloride (NaCl) ``` FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl ```

These equations represent the balanced chemical reactions between the salt, alkali, base, and new salt.

Conclusion:

When salt and alkali react, they can produce a base and a new salt. The specific reaction depends on the compounds involved. The examples provided show the chemical equations for the reactions between sodium chloride, iron(II) sulfate, and iron(III) chloride with various alkalis.