Question

Срочно даю 20 балов!! Складіть формули речовин продуктів реакцій і доберіть коефіцієнти:Na + O2 =P + O2 = (валентність фосфора V);Zn + P = (валентність фосфора ІІІ);Cr + Cl2 = (валентність хрома ІІІ).​

Answer 1

Ответ:

4Na + O2 → 2Na2O

4 P + 5 O2 → 2 P2O5

Zn + P = Zn3P2

2 Cr + 3 Cl2 → 2 CrCl3

Answer 2

Chemical Reactions and Balancing Equations

To solve this problem, we need to write the chemical formulas for the reactants and products of the given reactions and then balance the equations by adding coefficients. Let's go step by step:

1. Reaction 1: Na + O2 → P4O10 - Reactants: Sodium (Na) and Oxygen (O2) - Product: Phosphorus pentoxide (P4O10) - To balance the equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation. - The balanced equation is: 4Na + 5O2 → 2P4O10 [[1]].

2. Reaction 2: Zn + P → Zn3P2 - Reactants: Zinc (Zn) and Phosphorus (P) - Product: Zinc phosphide (Zn3P2) - To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. - The balanced equation is: 3Zn + 2P → Zn3P2 [[2]].

3. Reaction 3: Cr + Cl2 → CrCl3 - Reactants: Chromium (Cr) and Chlorine (Cl2) - Product: Chromium(III) chloride (CrCl3) - To balance the equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation. - The balanced equation is: 2Cr + 3Cl2 → 2CrCl3 [[3]].

Please note that the valence states of the elements (V and III) mentioned in the question are not directly related to the balancing of the equations. The coefficients in the balanced equations represent the stoichiometric ratios of the reactants and products.

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