Question

Розстав коефіцієнти у наведених схемах хімічних реакцій: 1) Na + S →Na2S2) Fe + Cl2 = FeCl33) N2 + Н2 → NH34) Ag + S = Ag2S5) Ca + O2 = CaO6) N2 + O2 = N2O57) Nа + О2 → Nа2О28) Fе + О2 → Fе3О49) FeBr3 + Cl2 = FeCl3 + Br210) P2O5 + H2O = H3PO4​

Answer 1

Ответ:

1)2Na+S

2)2Fe+3Cl2

3)N2+3H2

4)2Ag+S

5)2Ca+O2

6)2N2+5O2

8)3Fe+2O2

7)2Na+O2

9)2FeBr3+3Cl2=2FeCl3+3Br2

10)P2O5+3H2O=2H3PO4

Answer 2

1) 2Na + S → Na2S 2) 2Fe + 3Cl2 → 2FeCl3 3) N2 + 3H2 → 2NH3 4) 2Ag + S → Ag2S 5) 2Ca + O2 → 2CaO 6) N2 + O2 → N2O5 7) 4Na + O2 → 2Na2O 8) 4Fe + 3O2 → 2Fe3O4 9) 2FeBr3 + 3Cl2 → 2FeCl3 + 3Br2 10) P2O5 + 3H2O → 2H3PO4

Answer 3

Coefficients in Chemical Reactions:

1) Na + S → Na2S - The balanced equation for this reaction is: 2Na + S → Na2S [[1]].

2) Fe + Cl2 → FeCl3 - The balanced equation for this reaction is: 2Fe + 3Cl2 → 2FeCl3 [[2]].

3) N2 + H2 → NH3 - The balanced equation for this reaction is: N2 + 3H2 → 2NH3 [[3]].

4) Ag + S → Ag2S - The balanced equation for this reaction is: 2Ag + S → Ag2S [[4]].

5) Ca + O2 → CaO - The balanced equation for this reaction is: 2Ca + O2 → 2CaO [[5]].

6) N2 + O2 → N2O5 - The balanced equation for this reaction is: N2 + 2O2 → 2N2O5 [[6]].

7) Na + O2 → Na2O - The balanced equation for this reaction is: 4Na + O2 → 2Na2O [[7]].

8) Fe + O2 → Fe3O4 - The balanced equation for this reaction is: 4Fe + 3O2 → 2Fe3O4 [[8]].

9) FeBr3 + Cl2 → FeCl3 + Br2 - The balanced equation for this reaction is: FeBr3 + 3Cl2 → FeCl3 + 3Br2 [[9]].

10) P2O5 + H2O → H3PO4 - The balanced equation for this reaction is: P2O5 + 3H2O → 2H3PO4 [[10]].

Please note that the coefficients in chemical reactions are determined through the process of balancing the equation, ensuring that the number of atoms of each element is the same on both sides of the equation.