Question

Формула соли : А) Na2O Б)СаCO2 В)Н2SO3 С каким из соединений будет взаимодействовать ВаСl2 А)SO2 Б)H2SO4 В)Cu Допишите уравнение реакции CuCl2+NaОH Допишите уравнение реакции: СаCО3+HCl

Answer 1

Ответ:

1.б

2.б

3.=Cu(OH)2+NaCl

4.=CaCl2+H2CO3

Answer 2

Formula of salts:

The formula of salts can be determined by combining the symbols of the elements involved in the salt. Here are the formulas for the given salts:

A) Na2O - Sodium oxide B) CaCO2 - Calcium carbonate C) H2SO3 - Sulfurous acid

Interaction of BaCl2 with compounds:

BaCl2 (barium chloride) can react with different compounds to form various products. Let's consider the options provided:

A) BaCl2 + SO2 (sulfur dioxide): Barium chloride can react with sulfur dioxide to form barium sulfite (BaSO3) and chlorine gas (Cl2).

B) BaCl2 + H2SO4 (sulfuric acid): Barium chloride can react with sulfuric acid to form barium sulfate (BaSO4) and hydrochloric acid (HCl).

C) BaCl2 + Cu (copper): Barium chloride can react with copper to form barium copper chloride (BaCuCl4).

Therefore, BaCl2 can interact with all three compounds mentioned.

Reaction equation: CuCl2 + NaOH

The reaction between copper(II) chloride (CuCl2) and sodium hydroxide (NaOH) can be represented by the following balanced chemical equation:

CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl

In this reaction, copper(II) chloride reacts with sodium hydroxide to form copper(II) hydroxide and sodium chloride.

Reaction equation: CaCO3 + HCl

The reaction between calcium carbonate (CaCO3) and hydrochloric acid (HCl) can be represented by the following balanced chemical equation:

CaCO3 + 2HCl -> CaCl2 + H2O + CO2

In this reaction, calcium carbonate reacts with hydrochloric acid to form calcium chloride, water, and carbon dioxide.

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