Question

Розтавте коефіцієнти в рівняннях реакцій : 1. CaO+HCI ⇒CaCI₂+H₂O 2. Mg+O₂⇒MgO 3.NaNO₃⇒NaNO₂+O₂↑ 4. P+O₂ ⇒ P₂O₅

Answer 1

CaO+2HCl=CaCl2+H2O - обміну
Mg+O2=MgO2 - сполучення
2NaNO3=2NaNO2+O2 - розкладу
4P+5O2=2P2O5 - сполучення

Answer 2

Balancing Chemical Equations

To balance the chemical equations provided, 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. CaO + HCl ⇒ CaCl₂ + H₂O - The unbalanced equation: CaO + 2HCl ⇒ CaCl₂ + H₂O - Balancing the equation: CaO + 2HCl ⇒ CaCl₂ + H₂O

2. Mg + O₂ ⇒ MgO - The unbalanced equation: Mg + O₂ ⇒ MgO - Balancing the equation: 2Mg + O₂ ⇒ 2MgO

3. NaNO₃ ⇒ NaNO₂ + O₂↑ - The unbalanced equation: NaNO₃ ⇒ NaNO₂ + O₂↑ - Balancing the equation: 2NaNO₃ ⇒ 2NaNO₂ + O₂↑

4. P + O₂ ⇒ P₂O₅ - The unbalanced equation: P + O₂ ⇒ P₂O₅ - Balancing the equation: 4P + 5O₂ ⇒ P₂O₅

So, the balanced chemical equations are: 1. CaO + 2HCl ⇒ CaCl₂ + H₂O 2. 2Mg + O₂ ⇒ 2MgO 3. 2NaNO₃ ⇒ 2NaNO₂ + O₂↑ 4. 4P + 5O₂ ⇒ P₂O₅