Question

1. Закончите уравнения возможных химических реакций:Mg + 02 =Na + Са(0Н)2=Сu+ Н20=Li + N2=Zn + Hg(N03)2=Сu + H2S04 (разб) =Mg + Са(0Н)2=Си + AgN03=Са + 02=А1 + S = А1 + Вг2 =Са + Н2 =Na+S=А1 + НС1=

Answer 1

2Mg + O2 = 2MgO это у нас реакция соединения

Na + Са(OН)2 реакция не пойдет так как на натрий стоит правее кальция в электрохимическом раяду

Сu+ Н2O Медь с водой не реагирует. В ряду напряжений она стоит правее водорода и вытеснить его из воды не может!

Zn + Hg(NO3)2 = Zn(NO3)2 + Hg реакция замещения

Cu+H2SO4(разб) Cu стоит правее от H-водорода,не будет вытеснять металл

Cu + 2AgNO3 =Cu(NO3)2 + 2Ag реакция замещения
2Са+О2=2СаО реакция соединения
2Al + 3S = Al2S3 реакция соединения 
Al + Br2= AlBr3 реакция соединения 
Ca + H2 =CaH2 реакция соединения
Na+S=Na2S реакция соединения 
2Al + 6HCl = 2AlCl3 + 3H2 реакция замещения

 

если что-то непонятно, обращайся!! удачи**

Answer 2

Mg+O2=MgO

Сu+ Н20=Cu(oh)2

Zn + Hg(N03)2=Zn(No3)2+Hg

Сu + H2S04 (разб)=CuSo4+So2+H2o

Си + AgN03=Ag+SiNo3

Са + 02=Ca0

А1 + S = Al2S3       

А1 + Вг2 =AlBr3

Са + Н2 =Cah2

Na+S=Na2S

А1 + НС1=AlCl3+H2

Answer 3

Balancing Chemical Equations:

1. Mg + O2 = MgO - Magnesium reacts with oxygen to form magnesium oxide. - The balanced equation is: 2Mg + O2 = 2MgO [[1]].

2. NaOH + Ca(OH)2 = Ca(OH)2 + NaOH - Sodium hydroxide reacts with calcium hydroxide to form calcium hydroxide and sodium hydroxide. - The balanced equation is: 2NaOH + Ca(OH)2 = Ca(OH)2 + 2NaOH [[2]].

3. Cu + H2O = Cu(OH)2 + H2 - Copper reacts with water to form copper hydroxide and hydrogen gas. - The balanced equation is: Cu + 2H2O = Cu(OH)2 + H2 [[3]].

4. Li3N + N2 = 2LiN - Lithium nitride reacts with nitrogen gas to form lithium nitride. - The balanced equation is: 2Li3N + 3N2 = 6LiN [[4]].

5. Zn + Hg(NO3)2 = Zn(NO3)2 + Hg - Zinc reacts with mercury(II) nitrate to form zinc nitrate and mercury. - The balanced equation is: Zn + Hg(NO3)2 = Zn(NO3)2 + Hg [[5]].

6. Cu + H2SO4 = CuSO4 + H2 - Copper reacts with sulfuric acid to form copper sulfate and hydrogen gas. - The balanced equation is: Cu + H2SO4 = CuSO4 + H2 [[6]].

7. Mg + Ca(OH)2 = Mg(OH)2 + Ca - Magnesium reacts with calcium hydroxide to form magnesium hydroxide and calcium. - The balanced equation is: Mg + Ca(OH)2 = Mg(OH)2 + Ca [[7]].

8. Si + AgNO3 = Ag + SiO2 + NO - Silicon reacts with silver nitrate to form silver, silicon dioxide, and nitrogen monoxide. - The balanced equation is: 3Si + 4AgNO3 = 4Ag + 3SiO2 + 2NO [[8]].

9. Ca + O2 = CaO - Calcium reacts with oxygen to form calcium oxide. - The balanced equation is: 2Ca + O2 = 2CaO [[9]].

10. Al + S = Al2S3 - Aluminum reacts with sulfur to form aluminum sulfide. - The balanced equation is: 2Al + 3S = Al2S3 [[10]].

11. Al + HCl = AlCl3 + H2 - Aluminum reacts with hydrochloric acid to form aluminum chloride and hydrogen gas. - The balanced equation is: 2Al + 6HCl = 2AlCl3 + 3H2 [[11]].

12. Na + S = Na2S - Sodium reacts with sulfur to form sodium sulfide. - The balanced equation is: 2Na + S = Na2S [[12]].

Please let me know if you have any further questions!