Question

Cho các chất sau đây : Cu ; Na₂O ; MgO ; H₂SO₄ loãng ; H₂O .

Viết PTHH để tạo ra các bazơ tương ứng

Answer 1

\(\left(1\right)Na_2O+H_2O\rightarrow2NaOH\\\left(2\right) Cu+H_2SO_4\rightarrow CuSO_4+H_2\\ CuSO_4+2NaOH\rightarrow Na_2SO_4+Cu\left(OH\right)_2\\ \left(3\right)H_2O\underrightarrow{dp}H_2+\frac{1}{2}O_2\\ Cu+O_2+H_2O\rightarrow Cu\left(OH\right)_2\\ \left(4\right)MgO+H_2O\rightarrow Mg\left(OH\right)_2\\ \left(5\right)MgO+H_2SO_4\rightarrow MgSO_4+H_2O\\ MgSO_4+2NaOH\rightarrow Mg\left(OH\right)_2+Na_2SO_4\)

Answer 2

Cách khác:

MgO+ Cu(OH)2----> Mg(OH)2+ CuO

CuO+Mg(OH)2---> Cu(OH)2+ MgO

#Walker

Answer 3

- Cu

H2O -đp-> H2 + 1/2O2

Cu + 1/2O2 -to-> CuO

CuO + H2SO4 --> CuSO4 + H2O

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

- Na2O

Na2O + H2O --> NaOH

- MgO

MgO + H2SO4 --> MgSO4 + H2O

MgSO4 + 2NaOH --> Mg(OH)2 + Na2SO4

Answer 4

https://i.imgur.com/UeY3tWv.jpg

Answer 5

Na2O+H2O----> 2NaOH

#Walker

Answer 6

https://i.imgur.com/ZLIaqjH.jpg

Answer 7

bỏ chỗ Cu + H2SO4 nhé!

Answer 8

Bổ sung: 2H2O---(đpnc)--> 2H2+O2

2Cu+O2---(to)--> 2CuO

CuO+H2SO4---> CuSO4+H2O

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

MgO+H2SO4---> MgSO4+H2O

MgSO4+2NaOH---> Mg(OH)2+ Na2SO4

#Walker