H2SO44FES2 + 11O2 →T0 2FE2O3+ 8SO22SO2 + O2 ← →T0,XT 2SO3SO3 + H2O → H2SO4CUO + H2SO4 → CUSO4+ H2B) B

1.. a) A: SO

2

B: SO

3

C: H

2

SO

4

4FeS

2

+ 11O

2

→

^t

⁰

2Fe

2

O

3

+ 8SO

2

2SO

2

+ O

2

← →

^t

⁰



^,

^xt

2SO

3

SO

3

+ H

2

O → H

2

SO

4

CuO + H

2

SO

4

→ CuSO

4

+ H

2

b) B: Cu(NO

3

)

2

C: Cu(OH)

2

D: CuOCuSO

4

+ Ba(NO

3

)

2

→ Cu(NO

3

)

2

+ BaSO

4

↓Cu(NO

3

)

2

+ 2NaOH → Cu(OH)

2

↓+ 2NaNO

3

Cu(OH)

2

→

^t

⁰

CuO + H

2

OCuO + H

2

→

^t

⁰

Cu + H

2

Oc) A: FeCl

3

B: FeFe

2

O

3

+ 6HCl → 2FeCl

3

+ 3H

2

O2FeCl

3

+ Fe → 3FeCl

2

Fe

2

O

3

+ 3H

2

→

^t

⁰

2Fe + 3H

2

OFe + 2HCl → FeCl

2

+ H

2

↑1d. 4FeS

2

+ 11O

2

→

^t

⁰

2Fe

2

O

3

+ 8SO

2

(1)2SO

2

+ O

2

← →

^t

⁰



^,

^xt

2SO

3

(2)SO

3

+ H

2

O → H

2

SO

4

(3)SO

2

+ NaOH → NaHSO

3

(4)NaHSO

3

+ NaOH → Na

2

SO

3

+ H

2

O (5)H

2

SO

4

+ Na

2

SO

3

→ Na

2

SO

4

+ SO

2

↑ + H

2

O (6)