Question

Закончите уравнения реакций и расставьте коэффициенты Na3PO4 + NiCL --- Cu(NO3)2 + Zn(OH)2 --- H2CO3 + Ca(NO3)2 --- NaCO3 + Ca(OH)2 ---

Answer 1

Na3PO4+3NiCL-->Ni3PO4+3NaCL
Cu(NO3)2+Zn(OH)2-->Zn(NO3)2+Cu(OH)2
H2CO3+Ca(NO3)2-->CaCO3+2HNO3
Na2CO3+Ca(OH)2-->CaCO3+2NaOH

Answer 2

Balancing Chemical Equations

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

1. Na3PO4 + NiCl2 → Cu(NO3)2 + Zn(OH)2

To balance this equation, we start by counting the number of atoms for each element on both sides:

Sodium (Na): There are 3 sodium atoms on the left side and 1 on the right side. To balance the sodium atoms, we need to put a coefficient of 3 in front of NaCl2.

Phosphorus (P): There is 1 phosphorus atom on the left side and 1 on the right side. Phosphorus is already balanced.

Chlorine (Cl): There are 2 chlorine atoms on the left side and 2 on the right side. Chlorine is already balanced.

Copper (Cu): There is 1 copper atom on the right side and none on the left side. To balance the copper atoms, we need to put a coefficient of 1 in front of Cu(NO3)2.

Nitrogen (N): There are 2 nitrogen atoms on the right side and none on the left side. To balance the nitrogen atoms, we need to put a coefficient of 2 in front of Cu(NO3)2.

Oxygen (O): There are 6 oxygen atoms on the right side and none on the left side. To balance the oxygen atoms, we need to put a coefficient of 3 in front of Cu(NO3)2.

Zinc (Zn): There is 1 zinc atom on the right side and none on the left side. To balance the zinc atoms, we need to put a coefficient of 1 in front of Zn(OH)2.

Hydrogen (H): There are 4 hydrogen atoms on the right side and none on the left side. To balance the hydrogen atoms, we need to put a coefficient of 4 in front of Zn(OH)2.

The balanced equation is:

3 Na3PO4 + 2 NiCl2 → Cu(NO3)2 + Zn(OH)2

2. H2CO3 + Ca(NO3)2 → NaCO3 + Ca(OH)2

To balance this equation, we start by counting the number of atoms for each element on both sides:

Hydrogen (H): There are 2 hydrogen atoms on the left side and 2 on the right side. Hydrogen is already balanced.

Carbon (C): There is 1 carbon atom on the left side and none on the right side. To balance the carbon atoms, we need to put a coefficient of 1 in front of NaCO3.

Oxygen (O): There are 5 oxygen atoms on the left side and 5 on the right side. Oxygen is already balanced.

Calcium (Ca): There is 1 calcium atom on the right side and 1 on the left side. Calcium is already balanced.

Nitrogen (N): There are 2 nitrogen atoms on the right side and none on the left side. To balance the nitrogen atoms, we need to put a coefficient of 2 in front of Ca(NO3)2.

The balanced equation is:

H2CO3 + Ca(NO3)2 → NaCO3 + Ca(OH)2

Please note that the coefficients in front of the formulas represent the number of molecules or formula units, not individual atoms.