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222-9+11+12:2*14+14 = ? ( )

Hóa học Lớp 8: 20) Pb(OH)2 + HNO3 → Pb(NO3)2 + H2O 21) MgCl2 + KOH → Mg(OH)2 + KCl 22) Cu(OH)2 + HCl → CuCl2 + H2O 23) Cu(OH)2 + H2SO4 → CuSO4 + H2O 2

Tháng Mười Hai 3, 2022 Hóa học 2 Comments 0 views

Hóa học Lớp 8: 20) Pb(OH)2 + HNO3 → Pb(NO3)2 + H2O
21) MgCl2 + KOH → Mg(OH)2 + KCl
22) Cu(OH)2 + HCl → CuCl2 + H2O
23) Cu(OH)2 + H2SO4 → CuSO4 + H2O
24) FeO + HCl → FeCl2 + H2O
25) Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O
26) Cu(NO3)2 + NaOH → Cu(OH)2 + NaNO
27) P + O2 → P2O
28) N2 + O2 → NO
29) NO + O2 → NO2
30) NO2 + O2 + H2O → HNO, giúp em giải bài hóa này ạ, em cảm ơn thầy cô và các bạn nhiều.

Comments ( 2 )

  1. ngoclandiep
    ngoclandiep
    3 Tháng Mười Hai, 2022 at 12:05 sáng
    Reply
    20) $Pb(OH)_{2}$ + $2H(NO)_{3}$ $\longrightarrow$ $Pb(NO3)_{2}$ + $2H_{2}$$O_{}$  
    21) $MgCl_{2}$ + $2KOH_{}$ $\longrightarrow$ $Mg(OH)_{2}$ + $2KCl_{}$ 
    22) $Cu(OH)_{2}$ + $2HCl_{}$ $\longrightarrow$ $CuCl_{2}$ + $2H_{2}$$O_{}$  
    23) $Cu(OH)_{2}$ + $H_{2}$$SO_{4}$ $\longrightarrow$ $CuSO_{4}$ + $2H_{2}$$O_{}$  
    24) $FeO_{}$ + $2HCl_{}$ $\longrightarrow$ $FeCl_{2}$ + $H_{2}$$O_{}$   
    25) $Fe_{2}$$O_{3}$ + $3H_{2}$$SO_{4}$ $\longrightarrow$ $Fe_{2}$$(SO4)_{3}$ + $3H_{2}$$O_{}$   
    26) $Cu(NO3)_{2}$ + $2NaOH_{}$ $\longrightarrow$ $Cu(OH)_{2}$ + $2NaNO_{3}$
    27) $4P_{}$ + $O_{2}$ $\longrightarrow$ $2P_{2}$$O_{}$
    28) $N_{2}$ + $O_{2}$ $\longrightarrow$ $2NO_{}$
    29) $2NO_{}$ + $O_{2}$ $\longrightarrow$ $2NO_{2}$ 
    30) $4NO_{2}$ + $O_{2}$ + $2H_{2}$$O_{}$ $\longrightarrow$ $4HNO_{3}$ 

  2. hauthanhyen98
    hauthanhyen98
    3 Tháng Mười Hai, 2022 at 12:05 sáng
    Reply
    Giải đáp:
     
    20) Pb(OH)2 + 2HNO3 → Pb(NO3)2 + 2H2O

    21) MgCl2 + 2KOH → Mg(OH)2 + 2KCl

    22) Cu(OH)2 + 2HCl → CuCl2 + 2H2O

    23) Cu(OH)2 + H2SO4 → CuSO4 + 2H2O

    24) FeO + 2HCl → FeCl2 + H2O

    25) Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O

    26) Cu(NO3)2 + 2NaOH → Cu(OH)2 + 2NaNO3

    27) 4P + O2 → 2P2O

    28) N2 + O2 → 2NO

    29) 2NO + O2 → 2NO2

    30) 4NO2 + O2 + 2H2O → 4HNO3


    #chucbanhoctot.
    @nieucacvan.

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222-9+11+12:2*14+14 = ? ( )

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