Question

Cân bằng những phương trình sau:

1/Sắt(III) oxit + axit clohidric -> ?+?

2/ Canxi hidroxit + axit sunfuric-> ?+?

3/ Nhôm + axit clohidric -> ?+?

4/ Barinitrat + kalisunfat -> barisunfat +?

5/ Sắt(III) clorua + ? -> sắt(III) hidroxit+ kaliclorua

6/ Lưu huỳnh dioxit + nước -> axitsunfuro

7/ diphotphopentaoxit + Natrihidroxit -> Natriphotphat + Nước

8/ Lưu huỳnh trioxit + kalihidroxit -> kali sunfat + nước

9/ Nhôm sunfua + ? -> hidro sunfua + nhôm clorua

10/ canxi hidrocacbonat + axit clohidric -> canxi clorua + khí cacbonic

11/ Kali sunfat + axit sunfuric -> kali sunfat + lưu huỳnh dioxit + nước

12/ kali + nước -> hiđrô + ?

13/ sắt từ oxit + axit clohidric -> sắt (II) clorua + sắt (II) clorua + nước

14/ canxi hidroxit + sắt (II) sunfat -> ?+?

Answer 1

1,Fe2O3 + 6HCl-> 2FeCl3 + 3H2O

2,Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O

3,2Al + 6HCl -> 2AlCl3 + 3H2

4,Ba(NO3)2 + K2SO4 -> BaSO4 + 2KNO3

5, FeCl3 + 3KOH -> Fe(OH)3 + 3KCl

6, SO2 + H2O -> H2SO3

7, P2O5 + 6NaOH -> 2Na3PO4 + 3H2O

8, SO3 + 2KOH -> K2SO4 + H2O

9, Al2S3 + 6HCl -> 3H2S + 2AlCl3

10, Ca(HCO3)2 + 2HCl -> CaCl2 + 2CO2 + 2H2O

11, chưa cân bằng xong

12, 2K + 2H2O -> 2KOH + H2

13, Fe3O4 + 8HCl -> 2FeCl3 + FeCl2 + 4H2O

14, Ca(OH)2 + FeSO4 -> CaSO4 + Fe(OH)2

Answer 2

1. \(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
2. \(Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)
3. \(2Al+6HCl\rightarrow2AlCl_3+3H_2\uparrow\)
5. \(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3\downarrow+3KCl\)
6. \(SO_2+H_2O\rightarrow H_2SO_3\)
7. \(P_2O_5+6NaOH\rightarrow2Na_3PO_4+3H_2O\)
8. \(SO_3+2KOH\rightarrow K_2SO_4+H_2O\)
9. \(Al_2S_3+6HCl\rightarrow3H_2S\uparrow+2AlCl_3\)
12. \(2K+2H_2O\rightarrow2KOH+H_2\uparrow\)
13. \(Fe_3O_4+8HCl\rightarrow2FeCl_3+FeCl_2+4H_2O\)
14. \(Ca\left(OH\right)_2+FeSO_4\rightarrow CaSO_4+Fe\left(OH\right)_2\)

Answer 3

1) Fe₂O₃ + 6HCl\(\rightarrow\) 2FeCl₃ + 3H₂O.

2) Ca(OH)₂ + H₂SO₄\(\rightarrow\) CaSO₄ + 2H₂O