Question

Помогите с ДЗ по химии на тему "электролитическая диссоциация" 2.Написать уравнения диссоциации сильных и слабых электролитов. H2SiO3 , CaCl2, NaOH. 3.Закончить уравнения, расставить коэффициенты. Написать полное и сокращенное ионные уравнения. H2SO4 + NaOH = Na2CO3 + HCl =

Answer 1

1.H2SiO3= 2H+SiO3 (2 катиона и 1 анион =3 моля)
CaCl2=Ca+2Cl (1 катион и 2 аниона=3 моля)
NaOH=NA+OH (1катион и 1 анион=2 моля)

2.извини не получается.

Answer 2

Introduction

In this response, we will discuss the topic of "electrolytic dissociation" in chemistry. We will provide detailed explanations and help you with your homework questions related to the dissociation of strong and weak electrolytes. We will also write the dissociation equations, balance the equations, and provide the complete and simplified ionic equations for the given compounds: H2SiO3, CaCl2, and NaOH. Finally, we will complete and balance the equations for the given chemical reactions: H2SO4 + NaOH = Na2CO3 + HCl.

Electrolytic Dissociation

Electrolytic dissociation refers to the process in which an ionic compound or a molecule breaks down into its constituent ions when dissolved in a solvent, usually water. This dissociation occurs due to the attraction between the positive and negative charges of the solvent molecules and the ions of the compound.

Dissociation Equations for Strong and Weak Electrolytes

1. H2SiO3: - H2SiO3 is a weak electrolyte, meaning it only partially dissociates into ions when dissolved in water. - The dissociation equation for H2SiO3 can be written as: ``` H2SiO3 ⇌ H+ + HSiO3- ``` - In this equation, H2SiO3 breaks down into a hydrogen ion (H+) and a hydrogen silicate ion (HSiO3-).

2. CaCl2: - CaCl2 is a strong electrolyte, meaning it completely dissociates into ions when dissolved in water. - The dissociation equation for CaCl2 can be written as: ``` CaCl2 → Ca2+ + 2Cl- ``` - In this equation, CaCl2 breaks down into a calcium ion (Ca2+) and two chloride ions (Cl-).

3. NaOH: - NaOH is a strong electrolyte, meaning it completely dissociates into ions when dissolved in water. - The dissociation equation for NaOH can be written as: ``` NaOH → Na+ + OH- ``` - In this equation, NaOH breaks down into a sodium ion (Na+) and a hydroxide ion (OH-).

Complete and Simplified Ionic Equations

1. H2SiO3: - The complete ionic equation for the dissociation of H2SiO3 is: ``` H2SiO3 ⇌ 2H+ + SiO3^2- ``` - In this equation, H2SiO3 breaks down into two hydrogen ions (H+) and a silicate ion (SiO3^2-). - The simplified ionic equation, which shows only the ions that are involved in the reaction, is: ``` 2H+ + SiO3^2- ```

2. CaCl2: - The complete ionic equation for the dissociation of CaCl2 is: ``` CaCl2 → Ca^2+ + 2Cl- ``` - In this equation, CaCl2 breaks down into a calcium ion (Ca^2+) and two chloride ions (Cl-). - The simplified ionic equation is the same as the complete ionic equation since CaCl2 is a strong electrolyte.

3. NaOH: - The complete ionic equation for the dissociation of NaOH is: ``` NaOH → Na+ + OH- ``` - In this equation, NaOH breaks down into a sodium ion (Na+) and a hydroxide ion (OH-). - The simplified ionic equation is the same as the complete ionic equation since NaOH is a strong electrolyte.

Balancing Chemical Equations

Now, let's balance the given chemical reactions:

1. H2SO4 + NaOH → Na2SO4 + H2O: - The balanced equation is: ``` H2SO4 + 2NaOH → Na2SO4 + 2H2O ```

2. Na2CO3 + HCl → NaCl + H2O + CO2: - The balanced equation is: ``` Na2CO3 + 2HCl → 2NaCl + H2O + CO2 ```

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