Question

Пожалуйста помогите закончить уравнения реакций Na2CO3+HCl=NaOH+HCl=Fe(OH)3+HNO3=Mg+H2SO4=

Answer 1

Na₂CO₃ + HCl = NaCl + CO₂ +H₂O
NaOH + HCl = NaCl +H₂O
Fe(OH)₃ + HNO₃ = Fe(NO₃)₃ + H₂O
Mg + H₂SO₄ = MgSO₄ + H₂

Answer 2

#### Balancing Chemical Equations To balance 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 the given equations step by step: 1. Na2CO3 + HCl = NaOH + CO2 + H2O To balance this equation, we start by counting the number of atoms on each side: **Left side:** - Sodium (Na): 2 - Carbon (C): 1 - Oxygen (O): 3 **Right side:** - Sodium (Na): 1 - Hydrogen (H): 1 - Oxygen (O): 2 - Carbon (C): 1 To balance the sodium (Na) atoms, we need to put a coefficient of 2 in front of NaOH: Na2CO3 + HCl = 2NaOH + CO2 + H2O Now, let's balance the hydrogen (H) atoms. We have 1 hydrogen atom on the left side and 2 hydrogen atoms on the right side. To balance them, we need to put a coefficient of 2 in front of HCl: Na2CO3 + 2HCl = 2NaOH + CO2 + H2O Finally, let's balance the carbon (C) and oxygen (O) atoms. We have 1 carbon atom and 3 oxygen atoms on the left side, and 1 carbon atom and 2 oxygen atoms on the right side. To balance them, we need to put a coefficient of 1 in front of CO2: Na2CO3 + 2HCl = 2NaOH + CO2 + H2O So, the balanced equation is: Na2CO3 + 2HCl = 2NaOH + CO2 + H2O. 2. NaOH + HCl = NaCl + H2O This equation is already balanced. There is 1 sodium (Na) atom, 1 hydrogen (H) atom, 1 chlorine (Cl) atom, and 1 oxygen (O) atom on both sides. NaOH + HCl = NaCl + H2O 3. Fe(OH)3 + HNO3 = Fe(NO3)3 + H2O To balance this equation, we start by counting the number of atoms on each side: **Left side:** - Iron (Fe): 1 - Hydrogen (H): 3 - Oxygen (O): 3 **Right side:** - Iron (Fe): 1 - Nitrogen (N): 3 - Oxygen (O): 9 - Hydrogen (H): 2 To balance the hydrogen (H) atoms, we need to put a coefficient of 6 in front of HNO3: Fe(OH)3 + 6HNO3 = Fe(NO3)3 + H2O Now, let's balance the nitrogen (N) atoms. We have 1 nitrogen atom on the left side and 3 nitrogen atoms on the right side. To balance them, we need to put a coefficient of 3 in front of Fe(NO3)3: Fe(OH)3 + 6HNO3 = 3Fe(NO3)3 + H2O Finally, let's balance the oxygen (O) atoms. We have 3 oxygen atoms on the left side and 9 oxygen atoms on the right side. To balance them, we need to put a coefficient of 3 in front of H2O: Fe(OH)3 + 6HNO3 = 3Fe(NO3)3 + 3H2O So, the balanced equation is: Fe(OH)3 + 6HNO3 = 3Fe(NO3)3 + 3H2O. 4. Mg + H2SO4 = MgSO4 + H2 This equation is already balanced. There is 1 magnesium (Mg) atom, 1 sulfur (S) atom, 4 oxygen (O) atoms, and 2 hydrogen (H) atoms on both sides. Mg + H2SO4 = MgSO4 + H2 I hope this helps! Let me know if you have any further questions.