Question

СРОЧНО ЗА СХЕМАМИ СКЛАСТИ РІВНЯННЯ ХІМІЧНИХ РЕАКЦІЙ K2CO3+HNO3→KNO3+CO2↑+K2OFeCl3+NaOH→Fe (OH)3+NaClCaCO3+HCl→ CaCl2 + CO2 ↑ + H2OCu + HNO3→ Cu (NO3)2 + H2↑FeCl3 + NaOH→ Fe (OH)3↓ + NaClNa3PO4 + AgNO3 → Ag3PO4↓ + NaNO3​

Answer 1

Ответ:

K₂CO₃ + 2HNO₃→ 2KNO₃ + CO₂↑ + H₂O

FeCl₃ + 3NaOH → Fe(OH)₃+ 3NaCl

CaCO₃+ 2HCl→ CaCl₂ + CO₂ ↑ + H₂O

Cu + HNO3→ Cu (NO3)2 + H2↑ неверна реакция

Cu + 4HNO₃ конц → Cu(NO₃)₂ + 2H₂O + 2NO₂↑

FeCl₃ + 3NaOH→ Fe(OH)₃↓ + 3NaCl

Na₃PO₄+ 3AgNO₃ → Ag₃PO₄↓ + 3NaNO₃

Answer 2

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms of each element is the same on both sides of the equation. Let's go through each of the given chemical equations and balance them step by step.

1. K2CO3 + HNO3 → KNO3 + CO2↑ + K2O

To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides. Let's start with the carbon (C) atoms:

- There is one carbon atom on the left side (in K2CO3) and one carbon atom on the right side (in CO2). - The carbon atoms are already balanced.

Next, let's balance the hydrogen (H) atoms:

- There are two hydrogen atoms on the left side (in HNO3) and no hydrogen atoms on the right side. - To balance the hydrogen atoms, we can add two hydrogen atoms to the right side by adding H2O to the equation.

The balanced equation is:

K2CO3 + HNO3 → KNO3 + CO2↑ + H2O

2. FeCl3 + NaOH → Fe(OH)3 + NaCl

To balance this equation, let's start with the iron (Fe) atoms:

- There is one iron atom on the left side (in FeCl3) and one iron atom on the right side (in Fe(OH)3). - The iron atoms are already balanced.

Next, let's balance the chlorine (Cl) atoms:

- There are three chlorine atoms on the left side (in FeCl3) and one chlorine atom on the right side (in NaCl). - To balance the chlorine atoms, we can add three chlorine atoms to the right side by adding three NaCl to the equation.

The balanced equation is:

FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl

3. CaCO3 + HCl → CaCl2 + CO2↑ + H2O

To balance this equation, let's start with the calcium (Ca) atoms:

- There is one calcium atom on the left side (in CaCO3) and one calcium atom on the right side (in CaCl2). - The calcium atoms are already balanced.

Next, let's balance the carbon (C) atoms:

- There is one carbon atom on the left side (in CaCO3) and one carbon atom on the right side (in CO2). - The carbon atoms are already balanced.

Next, let's balance the hydrogen (H) atoms:

- There are two hydrogen atoms on the left side (in HCl) and two hydrogen atoms on the right side (in H2O). - The hydrogen atoms are already balanced.

Finally, let's balance the chlorine (Cl) atoms:

- There is one chlorine atom on the left side (in HCl) and two chlorine atoms on the right side (in CaCl2). - To balance the chlorine atoms, we can add one more HCl to the left side.

The balanced equation is:

CaCO3 + 2HCl → CaCl2 + CO2↑ + H2O

4. Cu + HNO3 → Cu(NO3)2 + H2↑

To balance this equation, let's start with the copper (Cu) atoms:

- There is one copper atom on the left side (in Cu) and one copper atom on the right side (in Cu(NO3)2). - The copper atoms are already balanced.

Next, let's balance the hydrogen (H) atoms:

- There are two hydrogen atoms on the left side (in HNO3) and two hydrogen atoms on the right side (in H2). - The hydrogen atoms are already balanced.

Finally, let's balance the nitrogen (N) and oxygen (O) atoms:

- There is one nitrogen atom on the left side (in HNO3) and two nitrogen atoms on the right side (in Cu(NO3)2). - To balance the nitrogen atoms, we can add one more HNO3 to the left side.

The balanced equation is:

Cu + 4HNO3 → Cu(NO3)2 + 2H2↑

5. FeCl3 + 3NaOH → Fe(OH)3↓ + 3NaCl

To balance this equation, let's start with the iron (Fe) atoms:

- There is one iron atom on the left side (in FeCl3) and one iron atom on the right side (in Fe(OH)3). - The iron atoms are already balanced.

Next, let's balance the chlorine (Cl) atoms:

- There are three chlorine atoms on the left side (in FeCl3) and three chlorine atoms on the right side (in 3NaCl). - The chlorine atoms are already balanced.

Finally, let's balance the sodium (Na) and oxygen (O) atoms:

- There are three sodium atoms on the left side (in 3NaOH) and none on the right side. - To balance the sodium atoms, we can add three more NaOH to the right side.

The balanced equation is:

FeCl3 + 3NaOH → Fe(OH)3↓ + 3NaCl

6. Na3PO4 + 3AgNO3 → Ag3PO4↓ + 3NaNO3

To balance this equation, let's start with the sodium (Na) atoms:

- There are three sodium atoms on the left side (in Na3PO4) and three sodium atoms on the right side (in 3NaNO3). - The sodium atoms are already balanced.

Next, let's balance the phosphorus (P) atoms:

- There is one phosphorus atom on the left side (in Na3PO4) and one phosphorus atom on the right side (in Ag3PO4). - The phosphorus atoms are already balanced.

Finally, let's balance the silver (Ag) and nitrogen (N) atoms:

- There are three silver atoms on the right side (in Ag3PO4) and three nitrogen atoms on the right side (in 3AgNO3). - The silver and nitrogen atoms are already balanced.

The balanced equation is:

Na3PO4 + 3AgNO3 → Ag3PO4↓ + 3NaNO3

I hope this helps! Let me know if you have any further questions.