Question

Hoàn thành các dãy chuyển đổi hoá học sau :

S --> SO2 --> SO3 --> H2SO4 --> CuSO4 --> Cu(OH)2 --> CuO --> CuCl2

Answer 1

(1) S + O\(_2\) →\(^{t^0}\) SO\(_2\)

(2) 2SO\(_2\) + O\(_2\) →\(^{t^0}\) 2SO\(_3\)

(3) SO\(_3\) + H\(_2\)O → H\(_2\)SO\(_4\)

(4) H\(_2\)SO\(_4\) + CuO → CuSO\(_4\) + H\(_2\)O

(5) CuSO\(_4\) + 2NaOH → Cu(OH)\(_2\)↓ + Na\(_2\)SO\(_4\)

(6) Cu(OH)\(_2\) →\(^{t^0}\) CuO + H\(_2\)O

(7) CuO + HCl → CuCl\(_2\) + H\(_2\)O

Answer 2

S+O2->SO2 (đk: t^o)

2SO2+O2->2SO3 (đk: t^o)

SO3+H2O->H2SO4

CuO+H2SO4->CuSO4+H2O

CuSO4+2NaOH->Cu(OH)2+Na2SO4

Cu(OH)2->CuO+H2O (đk: t^o)

CuO + 2HCl -> CuCl2 + H2O

Answer 3

(1) S + O₂ \(^{t^o}\rightarrow\) SO₂

(2)2 SO₂ + O₂ \(^{t^o}\rightarrow\) 2SO₃

(3) SO₃ + H₂O -> H₂SO₄

(4) H₂SO₄ + Cu(OH)₂ -> CuSO₄ +2 H₂O

(5) CuSO₄ + 2NaOH -> Cu(OH)₂ + Na₂SO₄

(6) Cu(OH)₂ \(^{t^o}\rightarrow\) CuO + H₂O

(7) CuO + HCl -> CuCl₂ + H₂O

Answer 4

xin loi pthh so 7 nhan 2 HCl nha