$\rm u)S + 2HNO_3 \rightarrow H_2SO_4 + 2NO \uparrow$

$\rm v)3Ba(NO_3)_2 + Al_2(SO_4)_3 \rightarrow 3BaSO_4 \downarrow + 2Al(NO_3)_3$
$\rm w)3Ba(OH)_2 + P_2O_5 \rightarrow Ba_3(PO_4)_3 \downarrow + 3H_2O$
$\rm x)2Fe_2O_3 + 3C \xrightarrow{t^o} 4Fe + 3CO_2 \uparrow$

lưu huỳnh oxi đồng

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mặt trời đồng

1+1=3

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hello Duy

hello Duy

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`Fe + 2HCl -> FeCl_2 + H_2`

`2Na + 2HCl -> 2NaCl + H_2`

`2Al + 6HCl -> 2AlCl_3 + 3H_2`

`2Al(OH)_3 + 3H_2SO_4 -> Al_2(SO_4)_3 + 6H_2O`

Fe + 2HCl → FeCl₂ + H₂
2Na + 2HCl → 2NaCl + H₂
2Al + 6HCl → 2AlCl₃ + 3H₂
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O

\(Fe+2HCl\rightarrow FeCl_2+H_2\)

\(2Na+2HCl\rightarrow2NaCl+H_2\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

\(2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+6H_2O\)

\(K_2O:\) oxit bazo: kali oxit

\(Mg\left(OH\right)_2:\) bazo: magie hidroxit

\(H_2SO_4:\) axit: axit sunfuric

\(AlCl_3:\) muối: nhôm clorua

\(Na_2CO_3:\) muối: natri cacbonat

\(CO_2:\) oxit axit: cacbon đioxit

\(Fe\left(OH\right)_3:\) bazo: sắt (lll) hidroxit

\(HNO_3:\) axit: axit nitric

\(K_3PO_4:\) muối: kali photphat

\(HCl:\) axit: axit clohidric

\(H_2S:\) axit: axit sunfuro

\(CuO:\) oxit bazo: đồng (ll) oxit

\(Ba\left(OH\right)_2\): bazo: bari hidroxit

\(Oxitbazo:CuO,Fe_2O_3\\ Oxitaxit:SO_3,SO_2\\Bazo:NaOH,Fe\left(OH\right)_2,KOH,Mg\left(OH\right)_2\\ Axit:HCl,H_3PO_4,H_2SO_4\\ Muối:KNO_3,BaCl_2,CuSO_4,CaCl_2\)

Oxit: \(CuO,SO_3,SO_2,Fe_2O_3\)

Axit: \(HCl,H_3PO_4,H_2SO_4\)

Bazơ: \(NaOH,Fe\left(OH\right)_2,KOH,Mg\left(OH\right)_2\)

Muối: \(KNO_3,BaCl_2,CuSO_4,CaCl_2\)

- Oxit bazơ: CuO và Fe₂O₃

- Oxit axit: SO₃ và SO₂

- Muối: KNO_3, BaCl₂, CuSO₄ và CaCl₂

- Bazơ: NaOH, Fe(OH)₂, KOH và Mg(OH)₂

- Axit: HCl, H₃PO₄ và H₂SO₄

Đơn chất:

-Phi kim:

+He->4(đvC)

+Cl2->35,5*2=71(đvC)

+F2->19*2=38(đvC)

+Br2->80*2=160(đvC)

-Kim loại:

+Ag->108(đvC)

+Fe->56(đvC)

Hợp chất:

-CO2->12+16*2=44(đvC)

-K2PO4->39*3+31+16*4=212(đvC)

-BaSO4->137+32+16*4=233(đvC)

-CuSO4->64+32+16*4=160(đvC)

-FeCl2->56+71=127(đvC)

-Na2O->62(đvC)

-HCl->36,5(đvC)

-H2S->34(đvC)

-Mg(NO3)3->148(đvC)

-Al(NO3)3->213(đvC)

-CaCO3->100(đvC)

-Ba(OH)2->172(đvC)

-H2SO4->98(đvC)

-KClO3->122,5(đvC)

-HBr->81(đvC)

-CaClO->91,5(đvC)

- Kim loại :

Ag = 108

Zn = 65

Fe = 56

- Phi kim :

F2 : 38

Br2 = 160

- Hợp chất :

CO2 = 44

K3PO4 = 212

BaSO4 = 233

CuSO4 = 160

FeCl2 = 127

Na2O = 62

HCl = 36.5

H2S = 34

Mg(NO3)2 = 148

Al(NO3)3 = 213

CuS = 96

CaCO3 = 100

Ba(OH)2 = 171

H2SO4 = 98

KClO3 = 122.5

HBr= 81

NaClO = 74.5

Thêm đvc phía sau nhé

a. + 3 ---> Al2(SO4)3 + 3H2O

b. 2 + 3 --->2Fe(OH)3 + 3Ba(NO3)2

c. 3 + 2 ---> Ca₃(PO₄)₂ + 6KNO₃

d. + 2 ---> CaCl₂ + 2CO₂ + 2H₂O

a, Al2O3+3H2SO4--->Al2(SO4)3+3H2O

b, 2Fe(NO3)3+3Ba(OH)2--->2Fe(OH)3+3Ba(NO3)2

c, 3Ca(NO3)2+2K3PO4--->Ca3(PO4)2+6KNO3

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