Đáp án: D

a, 2HNO3+Ca(OH)2-> Ca( NO3)2+2H2O

b, H2SO4+BaCl2-> BaSO4+2HCl

Xl mk nhầm câu c là : H2PO4 +Ca(OH)2-> Ca3(PO4)2 +H2O

Sr

Ba:137(g/mol)

BaO:137+16=153(g/mol)

BaSO₄:137+32+16.4=233(g/mol)

H₃PO₄:3+31+16.4=98(g/mol)

Mg(NO₃)₂:24+14.2+16.6=148(g/mol)

Tương tự...

1) 4Na + O₂ → 2Na₂O

2) Ba(OH)₂ + 2HCl → BaCl₂ + 2H₂O

3) 2HgO \(\underrightarrow{t^o}\) 2Hg + O₂

4) FeCl₃ + 3AgNO₃→ Fe(NO₃)₃+3 AgCl\(\downarrow\)

5) Mg + 2HCl → MgCl₂ + H₂

6) Ba + H₂SO₄ → BaSO₄\(\downarrow\) + H₂\(\uparrow\)

7)Fe + H₂SO₄→FeSO₄\(\downarrow\) + H₂\(\uparrow\)

8)Fe(NO₃)₃ + 3NaOH → Fe(OH)₃ + 3NaNO₃

9)2HNO₃ +Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O

10) 2K₃PO₄ + Ca(OH)₂→ Ca₃(PO₄)₂ \(\downarrow\)+ 6KOH

1. 1221

2. 1112

3. 213

4. 212

5. 32166

 \(CaCl_2+2AgNO_3\rightarrow2AgCl+Ca\left(NO_3\right)_2\)

\(Na_2SO_4+BaCl_2\rightarrow BaSO_4+2NaCl\)

\(2FeCl_3+Fe\rightarrow3FeCl_2\)

\(2FeCl_2+Cl_2\rightarrow2FeCl_3\)

\(3Ca\left(HCO_3\right)_2+2H_3PO_4\rightarrow Ca_3\left(PO_4\right)_2+6H_2O+6CO_2\)

\(CaCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}+2AgNO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}\rightarrow2AgCl+Ca\left(NO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}\right)_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}\)

\(Na_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}SO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }4}+BaCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}\rightarrow BáSO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }4}+2NaCl\)

\(2FeCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}+Fe\rightarrow3FeCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}\)

\(2FeCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}+Cl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}\rightarrow2FeCl_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}\)

\(2Ca\left(HCO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}\right)_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}+2H_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}PO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }4}\rightarrow Ca_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }3}\left(PO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }4}\right)_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}+6H_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}O+6CO_{_{ }_{ }_{ }_{ }_{ }_{ }_{ }_{ }2}\)

Nhóm các chất đều phản ứng với dung dịch Ca(OH) 2 là:

A.SiO 2 , HNO 3 , KNO 3

B.CO 2 , HCl, NaCl

C.P₂O₅ , H₂SO₄ , FeCl₂

D.SO 2 , H 3 PO 4 , BaCl 2

Ba(OH)₂ + H₂SO₄ \(\rightarrow\)BaSO₄ +2H₂O

3Fe₃O₄ + 8H₃PO₄ \(\rightarrow\) Fe₃(PO₄)₂ + 12H₂O + 6FePO₄

a, Ba(OH)₂ +H₂SO₄ ----> BaSO₄ +2H₂O

b,3Fe₃O₄+8H₃PO₄----->Fe₃(PO₄)₂+12FePO₄+6H₂O

Oxit: CaO, Na₂O, P₂O₅, NO₂, CuO, SO₃

Oxit axit: P₂O₅, NO₂ và SO₃.

Oxit bazơ: CaO, Na₂O, CuO.

Bạn tham khảo nhé!

Oxit :CaO, Na₂O, P₂O₅ , NO₂ ,CuO, SO₃​ . 

Oxit axit: P₂O₅ , NO₂ , SO₃​ . 

Oxit bazơ: CaO, Na₂O, CuO.

+Bazo: -Ca(OH)2 canxi hidroxit

-NaOh natri hidroxit

-Mg(OH)2 magie hidroxit

+axit - HNO3 axit nitrat

-H2SO4 axit sunfric

-HCl axit clohidric

-H3PO4 axit photphoric

+muối -NaCl natri clorua

-NaHSO4 natri hidro sunfua

-Ca(HCO3)2 canxi hidro cacbonat

-NaH2PO4 natri đihidro photphat

+oxit -FeO sắt(II) oxit

-MgO magie oxit

Bazơ:

Ca(OH)₂: Canxi hydroxit

NaOH: Natri hydroxit

Mg(OH)₂: Magie hydroxit

Oxit:

FeO: Sắt (II) oxit

MgO: Magie oxit

Axit:

HNO₃: Axit nitric

H₂SO₄:Axit sunfuric

HCl: Axit clohydric

H₃PO₄: Axit photphoric

Muối:

NaCl: Natri clorua

NaHSO₄: Natri hidrosunfat

NaH₂PO₄: Natri dihydrophotphat

Ca(HCO₃)₂: Canxi hidrocacbonat

Ca(OH)₂:bazo (canxi hidroxit)

NaOH:bazo (natri hidroxit)

Mg(OH)₂:bazo (magie hidroxit)

HNO₃:axit (axit nitric)

H₂SO₄:axit (axit sunfuric)

HCl:axit (axit clohidric)

H₃PO₄:axit (axit photphoric)

NaCl:muối (natri clorua)

FeO:oxit bazo (sắt (II) oxit)

MgO:oxit bazo (magie oxit)

NaHSO₄:muối (natri hidrosunfat)

Ca(HCO₃)₂:muối (canxi hidrocacbonat)

NaH₂PO₄:muối (natri đihidrophotphat)

Chúc bạn hk tốt

Oxit:

P₂O₅:diphotpho pentaoxit

CuO:đồng(II) oxit

SO₃:lưu huỳnh đioxit

Axit:

H₃PO₄:axit photphoric

H₂S: axit sunfuhiđric

HBr:axit bromhydric

Bazo:

Al(OH)₃:nhôm hidroxit

Fe(OH)₂:sắt(II) hidroxit

KOH:kali hidroxit

Muối:

K₃PO₄:kali photphat

CuCO₃:đồng cacbonat

Fe(NO₃)₂:sắt nitrat

CuSO₄:đồng sunfat

Ca₃(PO₄)₂:Canxi photphat

Ca(H₂PO₄)₂ :Canxi superphotphat

CaHPO₄: Canxi hidrophotphat

Na₂SiO₃:Natri silicat

b) P₂O₅: điphotpho pentaoxit

K₃PO₄:Muối Kaliphotphat

H₃PO₄: Axit photphoric

H₂S: Axit sunfua

HBr: Axit bromhiđric

CuCO₃:Muối đồng cacbonat

Fe(NO₃)₂: Muối sắt nitric

Al(OH)₃: Nhôm hiđroxit

Fe(OH)₂: Sắt(II) hiđroxit

KOH: kali hiđroxit

CuO: đồng oxit

CuSO₄: Muối đồng sunfuric

Ca₃(PO₄)₂: Muối canxiphotphat

Ca(HPO₄)₂: Muối canxi hiđrophotphat

SO₂: Lưu huỳnh đioxit

Na₂SiO₃: Muối natri silicic

a) Oxit: P₂O₅,CuO,SO₂

Axit: H₃PO₄,H₂S,HBr

Bazơ: Al(OH)₃,Fe(OH)₂,KOH,

Muối:K₃PO₄,CuCO₃,Fe(NO₃)₂,CuSO₄,Ca₃(PO₄)₂,Ca(HPO₄)₂,Na₂SiO₃