Question

Помогите,очень прошуууууу Дополните схемы,расставьте коэффициенты,определите тип химической реакции. 1) co2+?=BaCo3+? 2) HCl+?=CuCl2+? 3) Zn+?=?+H2

Answer 1

CO₂+Ba(OH)₂=BaCO₃↓+H₂O

2HCl(газ)+Cu=CuCl₂+H₂

Zn+H₂O(пар)=ZnO+H₂

Answer 2

1) CO2+BaCL2=BaCO3+CL2

2) 2HCl+Cu(NO3)2=CuCl2+2HNO3

3) Zn+2HCL=ZnCL2+H2

Answer 3

Chemical Reactions and Balancing Equations

1) The given chemical equation is: CO2 + ? = BaCO3 + ?

To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Let's balance it step by step:

First, let's balance the carbon (C) atoms: On the left side, we have 1 carbon atom in CO2, and on the right side, we have 1 carbon atom in BaCO3. So, the carbon atoms are already balanced.

Next, let's balance the oxygen (O) atoms: On the left side, we have 2 oxygen atoms in CO2, and on the right side, we have 3 oxygen atoms in BaCO3. To balance the oxygen atoms, we need to put a coefficient of 3 in front of CO2. The balanced equation is:

3CO2 + ? = BaCO3 + ?

2) The given chemical equation is: HCl + ? = CuCl2 + ?

To balance this equation, let's follow the same steps as before:

First, let's balance the hydrogen (H) atoms: On the left side, we have 1 hydrogen atom in HCl, and on the right side, we have 2 hydrogen atoms in CuCl2. To balance the hydrogen atoms, we need to put a coefficient of 2 in front of HCl. The balanced equation is:

2HCl + ? = CuCl2 + ?

Next, let's balance the chlorine (Cl) atoms: On the left side, we have 1 chlorine atom in HCl, and on the right side, we have 2 chlorine atoms in CuCl2. To balance the chlorine atoms, we need to put a coefficient of 2 in front of CuCl2. The balanced equation is:

2HCl + ? = 2CuCl2 + ?

3) The given chemical equation is: Zn + ? = H2

To balance this equation, let's follow the same steps as before:

First, let's balance the zinc (Zn) atoms: On the left side, we have 1 zinc atom, and on the right side, we have 0 zinc atoms. To balance the zinc atoms, we need to put a coefficient of 0 in front of Zn. The balanced equation is:

0Zn + ? = H2

Next, let's balance the hydrogen (H) atoms: On the left side, we have 0 hydrogen atoms, and on the right side, we have 2 hydrogen atoms in H2. To balance the hydrogen atoms, we need to put a coefficient of 2 in front of H2. The balanced equation is:

0Zn + ? = 2H2

Types of Chemical Reactions

1) The reaction CO2 + ? = BaCO3 + ? is a decomposition reaction. In this type of reaction, a compound breaks down into two or more simpler substances. Here, carbon dioxide (CO2) decomposes to form barium carbonate (BaCO3).

2) The reaction HCl + ? = CuCl2 + ? is a single replacement reaction. In this type of reaction, one element replaces another element in a compound. Here, hydrogen chloride (HCl) reacts with copper chloride (CuCl2), and hydrogen (H2) is produced while copper (Cu) replaces hydrogen in the compound.

3) The reaction Zn + ? = H2 is a displacement reaction. In this type of reaction, one element displaces another element from a compound. Here, zinc (Zn) reacts with an unknown compound to produce hydrogen gas (H2) while displacing the other element from the compound.

Please note that the coefficients (? values) for the unknowns in the equations need to be determined based on the specific conditions of the reaction or additional information provided.